[ CAS No. 131661-41-1 ] {[proInfo.proName]}

Name: 131661-41-1|3-Methyl-1H-pyrazole-4-carbonitrile|98%
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SKU: A178308
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Quality Control of [ 131661-41-1 ]

COA NMR CNMR HPLC LC-MS

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SDS Specification

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Product Details of [ 131661-41-1 ]

CAS No. :	131661-41-1	MDL No. :	MFCD05664572
Formula :	C₅H₅N₃	Boiling Point :	-
Linear Structure Formula :	-	InChI Key :	SBHYNBAKHDSUKT-UHFFFAOYSA-N
M.W :	107.11	Pubchem ID :	1382043
Synonyms :

Calculated chemistry of [ 131661-41-1 ]

Physicochemical Properties

Num. heavy atoms :	8
Num. arom. heavy atoms :	5
Fraction Csp3 :	0.2
Num. rotatable bonds :	0
Num. H-bond acceptors :	2.0
Num. H-bond donors :	1.0
Molar Refractivity :	28.27
TPSA :	52.47 Å²

Pharmacokinetics

GI absorption :	High
BBB permeant :	Yes
P-gp substrate :	No
CYP1A2 inhibitor :	No
CYP2C19 inhibitor :	No
CYP2C9 inhibitor :	No
CYP2D6 inhibitor :	No
CYP3A4 inhibitor :	No
Log Kp (skin permeation) :	-6.72 cm/s

Lipophilicity

Log Po/w (iLOGP) :	0.72
Log Po/w (XLOGP3) :	0.33
Log Po/w (WLOGP) :	0.59
Log Po/w (MLOGP) :	-0.63
Log Po/w (SILICOS-IT) :	1.36
Consensus Log Po/w :	0.48

Druglikeness

Lipinski :	0.0
Ghose :	None
Veber :	0.0
Egan :	0.0
Muegge :	1.0
Bioavailability Score :	0.55

Water Solubility

Log S (ESOL) :	-1.17
Solubility :	7.17 mg/ml ; 0.0669 mol/l
Class :	Very soluble
Log S (Ali) :	-1.0
Solubility :	10.8 mg/ml ; 0.101 mol/l
Class :	Very soluble
Log S (SILICOS-IT) :	-1.64
Solubility :	2.45 mg/ml ; 0.0229 mol/l
Class :	Soluble

Medicinal Chemistry

PAINS :	0.0 alert
Brenk :	0.0 alert
Leadlikeness :	1.0
Synthetic accessibility :	1.53

Safety of [ 131661-41-1 ]

Signal Word:	Warning	Class:	N/A
Precautionary Statements:	P280-P305+P351+P338	UN#:	N/A
Hazard Statements:	H302	Packing Group:	N/A
GHS Pictogram:

Application In Synthesis of [ 131661-41-1 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

Downstream synthetic route of [ 131661-41-1 ]

[ 131661-41-1 ] Synthesis Path-Downstream 1~11

1
[ 278602-14-5 ]
[ 131661-41-1 ]

Yield	Reaction Conditions	Operation in experiment
84%	With hydrazine hydrate at 25℃; for 0.166667h;

Reference： [1]Černuchová, Petra; Vo-Thanh, Giang; Milata, Viktor; Loupy, André; Jantová, Soňa; Theiszová, Marica [Tetrahedron, 2005, vol. 61, # 22, p. 5379 - 5387]

2
[ 24424-99-5 ]
[ 131661-41-1 ]
[ 1105039-39-1 ]

Yield	Reaction Conditions	Operation in experiment
85%	With dmap; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 14h;	1 EXAMPLE 1 : 7V-(2-Chlorophenyl)-3-(3-methyl-lH-pyrazol-4-yl)-l,2,4-thiadiazol- 5-amine (Final Compound 1-3) tert-Butyl 4-cyano-3-methyl-lH-pyrazole-l-carboxylate According to Scheme 1 Step 1 : To a solution of 3-methyl-lH-pyrazol-4-carbonitrile (9.34 mmol, 1.00 g) in DCM (20 mL) were sequentially added DIEA (9.34 mmol, 1.60 mL), (BoC)2O (9.34 mmol, 2.04 g) and DMAP (0.93 mmol, 0.11 g). After stirring for 14 hours at room temperature, the reaction mixture was quenched with water. The aqueous phase was extracted with DCM. The organic phase was washed with a saturated solution of NaηCC>3 and brine, was dried over MgSO4, was filtered and was concentrated under reduced pressure. The crude product was purified by flash chromatography over silica gel using cyclohexane/AcOEt (85:15) as eluent to afford tert-butyl 4-cyano-3-methyl-lH-pyrazole-l-carboxylate (7.96 mmol, 1.65 g, 85%) as a white solid. LC (Zorbax SB-Ci8, 3.5μm, 4.6x50mm Column): RT = 3.72 min; MS m/z ES+= 108 (M+-BoC).
85%	With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 14h;	1 According to Scheme 1 Step 1: To a solution of 3-methyl-1H-pyrazol-4-carbonitrile (9.34 mmol, 1.00 g) in DCM (20 mL) were sequentially added DIEA (9.34 mmol, 1.60 mL), (Boc)2O (9.34 mmol, 2.04 g) and DMAP (0.93 mmol, 0.11 g). After stirring for 14 hours at room temperature, the reaction mixture was quenched with water. The aqueous phase was extracted with DCM. The organic phase was washed with a saturated solution of NaHCO3 and brine, was dried over MgSO4, was filtered and was concentrated under reduced pressure. The crude product was purified by flash chromatography over silica gel using cyclohexane/AcOEt (85:15) as eluent to afford tert-butyl 4-cyano-3-methyl-1H-pyrazole-1-carboxylate (7.96 mmol, 1.65 g, 85%) as a white solid.LC (Zorbax SB-C18, 3.5 μm, 4.6×50 mm Column): RT=3.72 min; MS m/z ES+=108 (M+-Boc).

Reference： [1]Current Patent Assignee: ADDEX THERAPEUTICS SA - WO2009/10455, 2009, A2 Location in patent: Page/Page column 44
[2]Current Patent Assignee: ADDEX THERAPEUTICS SA - US2010/144756, 2010, A1 Location in patent: Page/Page column 19

3
[ 105-13-5 ]
[ 131661-41-1 ]
[ 1103424-71-0 ]
[ 1103424-72-1 ]

Yield	Reaction Conditions	Operation in experiment
	With di-tert-butyl-diazodicarboxylate; triphenylphosphine In dichloromethane at 0 - 20℃;	3 EXAMPLE 3: 3-(3-Methyl-lH-pyrazol-4-yl)-7V-(pyridin-2-yl)-l,2,4-thiadiazol-5- amine (Final Compound 1-5) l-(4-Methoxybenzyl)-3-methyl-lH-pyrazol-4-carbonitrile and l-(4-methoxybenzyl)-5- methyl-lH-pyrazol-4-carbonitrileAccording to Scheme 1 Step 1 : Triphenylphosphine (11 mmol, 2.9 g), (4- methoxyphenyl)methanol (10 mmol, 1.4 g) and di-tert-butylazodicarboxylate (11 mmol, 2.6 g) were added to a solution of 3-methyl-lH-pyrazol-4-carbonitrile (9.3 mmol, 1.0 g), in DCM (40 mL) at O0C. The reaction mixture was stirred at room temperature overnight. The organic phase was washed with a saturated solution of NH4OH and brine. Then the organic phase was dried over MgSO4, was filtered and was concentrated under reduced pressure. The resulting crude product was purified by flash chromatography over silica gel using cyclohexane/AcOEt (90: 10) as eluent to yield a mixture of l-(4-methoxybenzyl)-3 -methyl- lH-pyrazol-4-carbonitrile and of l-(4- methoxybenzyl)-5-methyl-lH-pyrazol-4-carbonitrile (9.3 mmol, 2.1g, 100%).
	With di-tert-butyl-diazodicarboxylate; triphenylphosphine In dichloromethane at 0 - 20℃;	3 According to Scheme 1 Step 1: Triphenylphosphine (11 mmol, 2.9 g), (4-methoxyphenyl)methanol (10 mmol, 1.4 g) and di-tert-butylazodicarboxylate (11 mmol, 2.6 g) were added to a solution of 3-methyl-1H-pyrazol-4-carbonitrile (9.3 mmol, 1.0 g), in DCM (40 mL) at 0° C. The reaction mixture was stirred at room temperature overnight. The organic phase was washed with a saturated solution of NH4OH and brine. Then the organic phase was dried over MgSO4, was filtered and was concentrated under reduced pressure. The resulting crude product was purified by flash chromatography over silica gel using cyclohexane/AcOEt (90:10) as eluent to yield a mixture of 1-(4-methoxybenzyl)-3-methyl-1H-pyrazol-4-carbonitrile and of 1-(4-methoxybenzyl)-5-methyl-1H-pyrazol-4-carbonitrile (9.3 mmol, 2.1 g, 100%).

Reference： [1]Current Patent Assignee: ADDEX THERAPEUTICS SA - WO2009/10455, 2009, A2 Location in patent: Page/Page column 48-49
[2]Current Patent Assignee: ADDEX THERAPEUTICS SA - US2010/144756, 2010, A1 Location in patent: Page/Page column 20-21

4
[ 186341-01-5 ]
[ 131661-41-1 ]

Yield	Reaction Conditions	Operation in experiment
52%	With hydrazine hydrate In ethanol at 0 - 10℃; for 1h;	Compound 257.3. 3-Methyl-lH-pyrazole-4-carbonitrile Compound 257.3. 3-Methyl-lH-pyrazole-4-carbonitrile. Into a 50-mL round- bottom flask, was placed a solution of (Z)-2-(ethoxymethylene)-3-oxobutanenitrile (compound 257.2, 5.00 g, 35.9 mmol) in ethanol (10 mL). The solution was cooled to 0 °C, then hydrazine monohydrate (2.09 mL, 43.1 mmol) was added and the reaction was stirred for 1 h at 10 °C. The reaction was diluted with water (10 mL) and then extracted with ethyl acetate (3 x 50 mL). The combined organic extracts were dried ( a2S04), filtered and concentrated under reduced pressure. The residue was purified by a silica gel column with ethyl acetate/petroleum ether (1 : 10) as eluent to obtain the title compound as a yellow solid (2.0 g, 52%).

Reference： [1]Current Patent Assignee: SAGIMET BIOSCIENCES INC. - WO2015/95767, 2015, A1 Location in patent: Page/Page column 302

5
[ 131661-41-1 ]
[ 1533442-26-0 ]

Yield	Reaction Conditions	Operation in experiment
21%	With N-iodo-succinimide In 1,2-dichloro-ethane at 150℃; for 1h; Microwave irradiation;	Compound 257.4. 5-Iodo-3-methyl-lH-pyrazole-4-carbonitrile. Into a 10-mL sealed tube, was placed a solution of 3 -methyl- lH-pyrazole-4-carbonitrile (compound 257.3, 2.0 g, 18.7 mmol) in DCE (6 mL). NIS (4.20 g, 18.7 mmol) was added to the reaction and the mixture was irradiated with microwave radiation for 1 h at 150 °C. The reaction was cooled, then carefully quenched with aqueous a2S203 (sat., 20 mL). The mixture was partitioned and the aqueous layer was extracted with ethyl acetate (100 mL). The combined organic layers were washed with brine (5 x 30 mL), dried ( a2S04), filtered and concentrated under reduced pressure. The residue was purified by silica gel chromatography with ethyl acetate/petroleum ether (1 : 10) as eluent to obtain the title compound as a yellow solid (900 mg, 21%).

Reference： [1]Current Patent Assignee: SAGIMET BIOSCIENCES INC. - WO2015/95767, 2015, A1 Location in patent: Page/Page column 302

Yield	Reaction Conditions	Operation in experiment
70%	With hydrazine hydrate In ethanol at 20℃; for 1h;	Intermediate 123B: 3-ethyl-1H-pyrazole-4-carbonitrile General procedure: To a solution of Intermediate 123A (5.00 g, 32.60 mmol) in EtOH (50 mL) was added hydrazine hydrate (5.12 mL, 163 mmol) and the reaction mixture was stirred at ambient temperature for 1 h. The reaction mixture was diluted with ice cold water (30 mL) and extracted with 10% MeOH:DCM (2 x 50 mL). The combined organic layers were washed with brine (10 mL) and dried over anhydrous sodium sulfate and evaporated under reduced pressure. The residue was purified by column chromatography (Redisep-40 g, 0-2% MeOH/DCM) to obtain Intermediate 123B (3.10 g, 78.00%) as a yellow solid.1H NMR (400 MHz, DMSO-d6) δ ppm 1.20 - 1.32 (m, 3 H), 2.66 - 2.80 (m, 2 H), 4.09 - 4.19 (m, 1 H), 8.17 (s, 1 H). LCMS (Method-L): retention time 0.75 min, [M+H] 122.1.

7
[ 24424-99-5 ]
[ 459-46-1 ]
[ 131661-41-1 ]
[ 2379587-26-3 ]
[ 2379587-27-4 ]

Yield	Reaction Conditions	Operation in experiment
	Stage #1: 4-Fluorobenzyl bromide; 3-methyl-1H-pyrazole-4-carbonitrile With sodium hydride In N,N-dimethyl-formamide at 0 - 20℃; for 12h; Stage #2: di-<i>tert</i>-butyl dicarbonate With methanol; sodium tetrahydroborate; cobalt(II) chloride hexahydrate In N,N-dimethyl-formamide at 0℃; for 1h;	1.2 3-Cyano-2-methylpyrazole and 1-(bromomethyl)-4-fluorobenzene (964.0 mg, 5.100 mmol) was taken into DMF (5 ml) and cooled to 0°C. Sodium hydride (240.0 mg, 6.000 mmol) was added to the reaction portionwise. The reaction was warmed to room temperature and stirred for 12 hrs. (Observed two regioisomers by LC/MS). The reaction was quenched with saturated NH4Cl (10 mL) and extracted with ethyl acetate (3×20 mL). The combined extracts were washed with brine, dried over MgSO4and concentrated to give crude mixture which was purified by column chromatography (SiO2) eluting with a gradient of 0-50% ethyl acetate in hexane to provide inseparable regioisomers. ESMS(M+1)=216.14._The mixture of regioisomers from Step 1 (1-(4-fluorobenzyl)-3-methyl-1H-pyrazole-4-carbonitrile and 1-(4-fluorobenzyl)-5-methyl-1H-pyrazole-4-carbonitrile (430.5 mg, 2.000 mmol), Boc2O (525 mg, 2.400 mmol), and dichlorocobalt hexahydrate (235.6 mg, 0.99 mmol) were taken into MeOH (5 mL) and cooled to 0°C. Sodium borohydride (940 mg, 1 mL, 24.8 mmol) was added to the mixture portion wise (the reaction turned black) and stirred for 1 hour. The reaction was evaporated in vacuo to afford a black solid. This was suspended in ethyl acetate (30 mL) and H2O (15 mL). The organic layer was collected and filtered to remove remaining solids. The filtrate was washed with brine and dried over MgSO4to provide the crude product that was purified by column chromatography (SiO2) eluting with a gradient of 0-50% ethyl acetate in hexane to give two peaks. The top spot was minor and the bottom spot was major. By H NMR and TLC, both spot were not separated cleanly so combined for next step (ratio: 1: 2.3).Top spot (ratio 1: 1.3):1H NMR (400 MHz, CDCl3)δ7.30 (d, J=69.7 Hz, 1H), 7.18-7.00 (m, 2H), 29.9 Hz, 2H), 6.96 (td, J=8.7, 6.6 Hz, 2H), 5.14 (d, J=4.53 (m, 1H), 4.92-(d, J=23.8 Hz, 3H), 4.07 (t, J=4.9 Hz, 2H), 2.16 (d, J=23.8 Hz, 3H), 1.41 (d, J=3.1 Hz, 9H).Bottom Spot (ratio 1:3):1H NMR (400 MHz, CDCl3)δ7.23 (s, 1H), 7.17 (ddd, J=8.1, 5.2, 2.5 Hz, 2H), 7.05-6.94 (m, 2H), 5.26-5.06 (m, 2H), 4.65 (s, 1H), 4.10 (d, J=5.1 Hz, 2H), 2.28-2.09 (m, 3H), 1.44 (q, J=2.5, 2.1 Hz, 10H). ESMS(M+1)=320.09.

Reference： [1]Current Patent Assignee: VERTEX PHARMACEUTICALS (OLD) - US2019/322673, 2019, A1 Location in patent: Paragraph 0478; 0784-0785

8
[ 459-46-1 ]
[ 131661-41-1 ]
[ 2379587-24-1 ]
[ 2379587-25-2 ]

Yield	Reaction Conditions	Operation in experiment
	With sodium hydride In N,N-dimethyl-formamide at 0 - 20℃; for 12h;	1.1 Step 1: 1-(4-fluorobenzyl)-3-methyl-1H-pyrazole-4-carbonitrile and 1-(4-fluorobenzyl)-5-methyl-1H-pyrazole-4-carbonitrile mmol) was taken into DMF (5 ml) and cooled to 0°C. Sodium hydride (240.0 mg, 6.000 mmol) was added to the reaction portionwise. The reaction was warmed to room temperature and stirred for 12 hrs. (Observed two regioisomers by LC/MS). The reaction was quenched with saturated NH4Cl (10 mL) and extracted with ethyl acetate (3×20 mL). The combined extracts were washed with brine, dried over MgSO4and concentrated to give crude mixture which was purified by column chromatography (SiO2) eluting with a gradient of 0-50% ethyl acetate in hexane to provide inseparable regioisomers. ESMS(M+1)=216.14.

Reference： [1]Current Patent Assignee: VERTEX PHARMACEUTICALS (OLD) - US2019/322673, 2019, A1 Location in patent: Paragraph 0478; 0784

9
[ 459-46-1 ]
[ 131661-41-1 ]
[ 2379587-28-5 ]
[ 2379587-29-6 ]

Yield	Reaction Conditions	Operation in experiment
	Stage #1: 4-Fluorobenzyl bromide; 3-methyl-1H-pyrazole-4-carbonitrile With sodium hydride In N,N-dimethyl-formamide at 0 - 20℃; for 12h; Stage #2: With methanol; sodium tetrahydroborate; cobalt(II) chloride hexahydrate; di-<i>tert</i>-butyl dicarbonate In N,N-dimethyl-formamide at 0℃; for 1h; Stage #3: With hydrogenchloride In 1,4-dioxane at 20℃; for 3h;	1.3 3-Cyano-2-methylpyrazole and 1-(bromomethyl)-4-fluorobenzene (964.0 mg, 5.100 mmol) was taken into DMF (5 ml) and cooled to 0°C. Sodium hydride (240.0 mg, 6.000 mmol) was added to the reaction portionwise. The reaction was warmed to room temperature and stirred for 12 hrs. (Observed two regioisomers by LC/MS). The reaction was quenched with saturated NH4Cl (10 mL) and extracted with ethyl acetate (3×20 mL). The combined extracts were washed with brine, dried over MgSO4and concentrated to give crude mixture which was purified by column chromatography (SiO2) eluting with a gradient of 0-50% ethyl acetate in hexane to provide inseparable regioisomers. ESMS(M+1)=216.14._The mixture of regioisomers from Step 1 (1-(4-fluorobenzyl)-3-methyl-1H-pyrazole-4-carbonitrile and 1-(4-fluorobenzyl)-5-methyl-1H-pyrazole-4-carbonitrile (430.5 mg, 2.000 mmol), Boc2O (525 mg, 2.400 mmol), and dichlorocobalt hexahydrate (235.6 mg, 0.99 mmol) were taken into MeOH (5 mL) and cooled to 0°C. Sodium borohydride (940 mg, 1 mL, 24.8 mmol) was added to the mixture portion wise (the reaction turned black) and stirred for 1 hour. The reaction was evaporated in vacuo to afford a black solid. This was suspended in ethyl acetate (30 mL) and H2O (15 mL). The organic layer was collected and filtered to remove remaining solids. The filtrate was washed with brine and dried over MgSO4to provide the crude product that was purified by column chromatography (SiO2) eluting with a gradient of 0-50% ethyl acetate in hexane to give two peaks. The top spot was minor and the bottom spot was major. By H NMR and TLC, both spot were not separated cleanly so combined for next step (ratio: 1: 2.3).Top spot (ratio 1: 1.3):1H NMR (400 MHz, CDCl3)δ7.30 (d, J=69.7 Hz, 1H), 7.18-7.00 (m, 2H), 29.9 Hz, 2H), 6.96 (td, J=8.7, 6.6 Hz, 2H), 5.14 (d, J=4.53 (m, 1H), 4.92-(d, J=23.8 Hz, 3H), 4.07 (t, J=4.9 Hz, 2H), 2.16 (d, J=23.8 Hz, 3H), 1.41 (d, J=3.1 Hz, 9H).Bottom Spot (ratio 1:3):1H NMR (400 MHz, CDCl3)δ7.23 (s, 1H), 7.17 (ddd, J=8.1, 5.2, 2.5 Hz, 2H), 7.05-6.94 (m, 2H), 5.26-5.06 (m, 2H), 4.65 (s, 1H), 4.10 (d, J=5.1 Hz, 2H), 2.28-2.09 (m, 3H), 1.44 (q, J=2.5, 2.1 Hz, 10H). ESMS(M+1)=320.09._The mixture of regioisomers from Step 2 (1 g, 3.26 mmol) were taken into 1,4-dioxane (2 mL). A solution of 4 M HCl (4 mL, 16 mmol) in dioxane was added to the solution and stirred at room temperature for 3 hours. Diethyl ether (10 mL) was added to the solution and a yellow precipitate formed. This was collected and dried to provide a mixture of regioisomers that were not separable.1H NMR (400 MHz, Methanol-d4)δ8.77 (s, 1H), 8.60-8.28 (m, 1H), 8.11 (td, J=5.9, 2.8 Hz, 1H), 7.95 (dddt, J=13.5, 8.7, 6.5, 2.6 Hz, 2H), 6.05 (dt, J=27.0, 2.4 Hz, 2H), 4.63 (dq, J=5.2, 2.7 Hz, 2H), 4.06-3.86 (m, 2H), 3.00 (dt, J=22.3, 1.8 Hz, 3H). ESMS(M+1)=220.11.

Reference： [1]Current Patent Assignee: VERTEX PHARMACEUTICALS (OLD) - US2019/322673, 2019, A1 Location in patent: Paragraph 0478; 0784-0786

10
[ 885121-98-2 ]
[ 131661-41-1 ]

Yield	Reaction Conditions	Operation in experiment
90%	With hydrazine hydrate; sodium hydrogencarbonate In water; toluene at 5℃; for 2h;	2 Example 2 In a four-necked flask, put 98 g of a 10% aqueous solution of hydrazine hydrate,The percentage is the mass percentage of the mass of hydrazine hydrate relative to the total mass of the aqueous solution.2% sodium bicarbonate aqueous solution adjusts the pH of the reaction system to 8-9,The percentage is the mass percentage of the mass of sodium bicarbonate relative to the total mass of the aqueous solution, and the temperature is reduced to 5 ° C.75.7 g of the 2-((dimethylamino) methylene) -3-oxobutyronitrile toluene solution obtained in Example 1 was added dropwise,The temperature is controlled at <5 ° C. After dripping, stirring for 2hr, standing and layering,The organic layer was washed with 22.7 g of 10% hydrochloric acid, and the percentage was mass percentage.17.9 g of 3-methyl-4-cyano-1H-pyrazole was obtained in a yield of 90%.

Reference： [1]Current Patent Assignee: LIANHE CHEMICAL TECHNOLOGY CO., LTD. - CN104016920, 2016, B Location in patent: Paragraph 0053-0054

11
[ 2369001-18-1 ]
[ 131661-41-1 ]
[ 2368999-54-4 ]
[ 2368999-53-3 ]

Yield	Reaction Conditions	Operation in experiment
11%	With potassium carbonate In tetrahydrofuran at 20℃; for 5h;	1-(2-((3R,5R,8S,9S,10R,13S,14S,17S)-10-Fluoro-3-hydroxy-3,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl)-3-methyl-1H-pyrazole-4-carbonitr ile (38) 1-(2-((3R,5R,8S,9S,10R,13S,14S,17S)-10-Fluoro-3-hydroxy-3,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl)-5-methyl-1H-pyrazole-4-carbonitr ile (39) In accordance with Step 2 of Example 2, 2-bromo-1-((3R,5R,8S,10R,13S,14S,17S)-10-fluoro-3-hydroxy-3,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethan-1-one was used as the starting material, accordingly, the products 1-(2-((3R,5R,8S,9S,10R,13S,14S,17S)-10-fluoro-3-hydroxy-3,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl)-3-methyl-1H-pyrazole-4-carbonitrile (38) (16.5 mg, white solid, yield: 19.5%) and 1-(2-((3R,5R,8S,9S,10R,13S,14S,17S)-10-fluoro-3-hydroxy-3,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl)-5-methyl-1H-pyrazole-4-carbonitrile (39) (9.5 mg, white solid, yield: 11%) were obtained.

Reference： [1]Current Patent Assignee: HANSOH PHARMACEUTICAL GROUP CO LTD - EP3750909, 2020, A1 Location in patent: Paragraph 0145-0146

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P235	Keep cool
P240	Ground/bond container and receiving equipment.
P241	Use explosion-proof electrical/ventilating/lighting/equipment.
P242	Use only non-sparking tools.
P243	Take precautionary measures against static discharge.
P244	Keep reduction valves free from grease and oil.
P250	Do not subject to grinding/shock/friction.
P251	Pressurized container: Do not pierce or burn, even after use.
P260	Do not breathe dust/fume/gas/mist/vapours/spray.
P261	Avoid breathing dust/fume/gas/mist/vapours/spray.
P262	Do not get in eyes, on skin, or on clothing.
P263	Avoid contact during pregnancy/while nursing.
P264	Wash hands thoroughly after handling.
P265	Wash skin thouroughly after handling.
P270	Do not eat, drink or smoke when using this product.
P271	Use only outdoors or in a well-ventilated area.
P272	Contaminated work clothing should not be allowed out of the workplace.
P273	Avoid release to the environment.
P280	Wear protective gloves/protective clothing/eye protection/face protection.
P281	Use personal protective equipment as required.
P282	Wear cold insulating gloves/face shield/eye protection.
P283	Wear fire/flame resistant/retardant clothing.
P284	Wear respiratory protection.
P285	In case of inadequate ventilation wear respiratory protection.
P231 + P232	Handle under inert gas. Protect from moisture.
P235 + P410	Keep cool. Protect from sunlight.
Response
Code	Phrase
P301	IF SWALLOWED:
P304	IF INHALED:
P305	IF IN EYES:
P306	IF ON CLOTHING:
P307	IF exposed:
P308	IF exposed or concerned:
P309	IF exposed or if you feel unwell:
P310	Immediately call a POISON CENTER or doctor/physician.
P311	Call a POISON CENTER or doctor/physician.
P312	Call a POISON CENTER or doctor/physician if you feel unwell.
P313	Get medical advice/attention.
P314	Get medical advice/attention if you feel unwell.
P315	Get immediate medical advice/attention.
P320
P302 + P352	IF ON SKIN: wash with plenty of soap and water.
P321
P322
P330	Rinse mouth.
P331	Do NOT induce vomiting.
P332	IF SKIN irritation occurs:
P333	If skin irritation or rash occurs:
P334	Immerse in cool water/wrap n wet bandages.
P335	Brush off loose particles from skin.
P336	Thaw frosted parts with lukewarm water. Do not rub affected area.
P337	If eye irritation persists:
P338	Remove contact lenses, if present and easy to do. Continue rinsing.
P340	Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P341	If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing.
P342	If experiencing respiratory symptoms:
P350	Gently wash with plenty of soap and water.
P351	Rinse cautiously with water for several minutes.
P352	Wash with plenty of soap and water.
P353	Rinse skin with water/shower.
P360	Rinse immediately contaminated clothing and skin with plenty of water before removing clothes.
P361	Remove/Take off immediately all contaminated clothing.
P362	Take off contaminated clothing and wash before reuse.
P363	Wash contaminated clothing before reuse.
P370	In case of fire:
P371	In case of major fire and large quantities:
P372	Explosion risk in case of fire.
P373	DO NOT fight fire when fire reaches explosives.
P374	Fight fire with normal precautions from a reasonable distance.
P376	Stop leak if safe to do so. Oxidising gases (section 2.4) 1
P377	Leaking gas fire: Do not extinguish, unless leak can be stopped safely.
P378
P380	Evacuate area.
P381	Eliminate all ignition sources if safe to do so.
P390	Absorb spillage to prevent material damage.
P391	Collect spillage. Hazardous to the aquatic environment
P301 + P310	IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P301 + P312	IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P301 + P330 + P331	IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P302 + P334	IF ON SKIN: Immerse in cool water/wrap in wet bandages.
P302 + P350	IF ON SKIN: Gently wash with plenty of soap and water.
P303 + P361 + P353	IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304 + P312	IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell.
P304 + P340	IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P304 + P341	IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P306 + P360	IF ON CLOTHING: Rinse Immediately contaminated CLOTHING and SKIN with plenty of water before removing clothes.
P307 + P311	IF exposed: call a POISON CENTER or doctor/physician.
P308 + P313	IF exposed or concerned: Get medical advice/attention.
P309 + P311	IF exposed or if you feel unwell: call a POISON CENTER or doctor/physician.
P332 + P313	IF SKIN irritation occurs: Get medical advice/attention.
P333 + P313	IF SKIN irritation or rash occurs: Get medical advice/attention.
P335 + P334	Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages.
P337 + P313	IF eye irritation persists: Get medical advice/attention.
P342 + P311	IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician.
P370 + P376	In case of fire: Stop leak if safe to Do so.
P370 + P378	In case of fire:
P370 + P380	In case of fire: Evacuate area.
P370 + P380 + P375	In case of fire: Evacuate area. Fight fire remotely due to the risk of explosion.
P371 + P380 + P375	In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion.
Storage
Code	Phrase
P401
P402	Store in a dry place.
P403	Store in a well-ventilated place.
P404	Store in a closed container.
P405	Store locked up.
P406	Store in corrosive resistant/ container with a resistant inner liner.
P407	Maintain air gap between stacks/pallets.
P410	Protect from sunlight.
P411
P412	Do not expose to temperatures exceeding 50 oC/ 122 oF.
P413
P420	Store away from other materials.
P422
P402 + P404	Store in a dry place. Store in a closed container.
P403 + P233	Store in a well-ventilated place. Keep container tightly closed.
P403 + P235	Store in a well-ventilated place. Keep cool.
P410 + P403	Protect from sunlight. Store in a well-ventilated place.
P410 + P412	Protect from sunlight. Do not expose to temperatures exceeding 50 oC/122oF.
P411 + P235	Keep cool.
Disposal
Code	Phrase
P501	Dispose of contents/container to ...
P502	Refer to manufacturer/supplier for information on recovery/recycling

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Physical hazards
Code	Phrase
H200	Unstable explosive
H201	Explosive; mass explosion hazard
H202	Explosive; severe projection hazard
H203	Explosive; fire, blast or projection hazard
H204	Fire or projection hazard
H205	May mass explode in fire
H220	Extremely flammable gas
H221	Flammable gas
H222	Extremely flammable aerosol
H223	Flammable aerosol
H224	Extremely flammable liquid and vapour
H225	Highly flammable liquid and vapour
H226	Flammable liquid and vapour
H227	Combustible liquid
H228	Flammable solid
H229	Pressurized container: may burst if heated
H230	May react explosively even in the absence of air
H231	May react explosively even in the absence of air at elevated pressure and/or temperature
H240	Heating may cause an explosion
H241	Heating may cause a fire or explosion
H242	Heating may cause a fire
H250	Catches fire spontaneously if exposed to air
H251	Self-heating; may catch fire
H252	Self-heating in large quantities; may catch fire
H260	In contact with water releases flammable gases which may ignite spontaneously
H261	In contact with water releases flammable gas
H270	May cause or intensify fire; oxidizer
H271	May cause fire or explosion; strong oxidizer
H272	May intensify fire; oxidizer
H280	Contains gas under pressure; may explode if heated
H281	Contains refrigerated gas; may cause cryogenic burns or injury
H290	May be corrosive to metals
Health hazards
Code	Phrase
H300	Fatal if swallowed
H301	Toxic if swallowed
H302	Harmful if swallowed
H303	May be harmful if swallowed
H304	May be fatal if swallowed and enters airways
H305	May be harmful if swallowed and enters airways
H310	Fatal in contact with skin
H311	Toxic in contact with skin
H312	Harmful in contact with skin
H313	May be harmful in contact with skin
H314	Causes severe skin burns and eye damage
H315	Causes skin irritation
H316	Causes mild skin irritation
H317	May cause an allergic skin reaction
H318	Causes serious eye damage
H319	Causes serious eye irritation
H320	Causes eye irritation
H330	Fatal if inhaled
H331	Toxic if inhaled
H332	Harmful if inhaled
H333	May be harmful if inhaled
H334	May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335	May cause respiratory irritation
H336	May cause drowsiness or dizziness
H340	May cause genetic defects
H341	Suspected of causing genetic defects
H350	May cause cancer
H351	Suspected of causing cancer
H360	May damage fertility or the unborn child
H361	Suspected of damaging fertility or the unborn child
H361d	Suspected of damaging the unborn child
H362	May cause harm to breast-fed children
H370	Causes damage to organs
H371	May cause damage to organs
H372	Causes damage to organs through prolonged or repeated exposure
H373	May cause damage to organs through prolonged or repeated exposure
Environmental hazards
Code	Phrase
H400	Very toxic to aquatic life
H401	Toxic to aquatic life
H402	Harmful to aquatic life
H410	Very toxic to aquatic life with long-lasting effects
H411	Toxic to aquatic life with long-lasting effects
H412	Harmful to aquatic life with long-lasting effects
H413	May cause long-lasting harmful effects to aquatic life
H420	Harms public health and the environment by destroying ozone in the upper atmosphere

[ CAS No. 131661-41-1 ] {[proInfo.proName]}

Quality Control of [ 131661-41-1 ]

Related Doc. of [ 131661-41-1 ]

Product Details of [ 131661-41-1 ]

Calculated chemistry of [ 131661-41-1 ]

Physicochemical Properties

Pharmacokinetics

Lipophilicity

Druglikeness

Water Solubility

Medicinal Chemistry

Safety of [ 131661-41-1 ]

Application In Synthesis of [ 131661-41-1 ]

[ 131661-41-1 ] Synthesis Path-Downstream 1~11

Related Functional Groups of [ 131661-41-1 ]

Nitriles

Related Parent Nucleus of [ 131661-41-1 ]

Pyrazoles

Precautionary Statements-General

Prevention

Response

Storage

Disposal

Physical hazards

Health hazards

Environmental hazards

Inquiry

Related Functional Groups of
[ 131661-41-1 ]

Related Parent Nucleus of
[ 131661-41-1 ]