Structure of 53557-69-0
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CAS No. : | 53557-69-0 |
Formula : | C4H4IN3 |
M.W : | 221.00 |
SMILES Code : | NC1=NC=NC(=C1)I |
MDL No. : | MFCD11109819 |
InChI Key : | LQSJUQMCZHVKES-UHFFFAOYSA-N |
Pubchem ID : | 12258871 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H332-H335 |
Precautionary Statements: | P261-P280-P305+P351+P338 |
Num. heavy atoms | 8 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.0 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 39.15 |
TPSA ? Topological Polar Surface Area: Calculated from |
51.8 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.44 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
0.48 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
0.67 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.33 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.31 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
0.85 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.07 |
Solubility | 1.89 mg/ml ; 0.00856 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-1.14 |
Solubility | 16.1 mg/ml ; 0.0729 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.25 |
Solubility | 1.24 mg/ml ; 0.00561 mol/l |
Class? Solubility class: Log S scale |
Soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
No |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-7.31 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
1.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
1.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
2.28 |
* 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.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | With hydrogen iodide; sodium iodide; In water; at 70℃; for 0.5h; | Description 93; 6-IodoPvrimidin-4-amine-«,; A mixture of 4-amino-6-chloropyrimidine [WO-A-0245652] (1. 00 g, 7.72 mmol), sodium iodide (5.79 g, 38.6 mmol) and 40% HI (20 ml) were heated at 70C for 30 min, then allowed to cool to room temperature. The precipitate was removed by filtration, and partitioned between dichloromethane and sat. NaHCO3. The organic layer was separated, and dried over Na2SO4, filtered, and evaporated to give the title compound (1.2 g, 70%). 1H NMR (400 MHz, DMSO-d6) 6.89 (1 H, s), 7.04 (2 H, br s), 8.04 (1 H, s). |
65% | With hydrogen iodide; In water; at 0 - 20℃; for 18.5h; | 6-Chloropyrimidin-4-ylamine (450 mg) was added in portions to HI (57% wt. aq. , 20 mL) at 0 C. The reaction mixture was stirred for 30 minutes at 0 C and then at ambient temperature for 18 hours. The reaction mixture was treated with NaHC03 (sat. aq. ) until pH8 was achieved and then the product extracted with EtOAc (2 x 30 mL). The combined organics were washed with NaOH (2M, aq. ), dried (MgS04), filtered and then concentrated. The crude product was used directly without further purification (500 mg, 65%); lH NMR (CDCl3) ; 6.90 (s, 1H), 7.03 (s, 2H), 8.05 (s, 1H); MS m/e MHs 221. |
47% | With hydrogen iodide; In water; at 0 - 20℃; for 3.0h; | General procedure: 2-Amino-4-chloropyrimidine (55) (13.0g, 100mmol) was added to a 57wt.% aqueous solution of hydriodic acid (115ml, 1.00mol) at 0C and the mixture was stirred at room temperature for 3h. The mixture was cooled to 0C and the resulting precipitate was removed by filtration and taken up in cold 5N aqueous Na2CO3 (200ml). The mixture was extracted with EtOAc (3×500ml) and the combined organic layers were concentrated under reduced pressure to deliver 2-amino-4-iodopyrimidine (21.1g, 95.0mmol, 95% yield) as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
3% | Description 94; 6-(1 8-Naphthyridin-2-yl) pvrimidin-4-amine; To a mixture of Description 92 (2.52 g, 15. 3 mmol), hexamethylditin (5.0 g, 15.3 mmol), lithium chloride (1.95 g, 45.9 mmol), and copper (I) iodide (291 mg, 1.53 mmol) in anhydrous 1,4-dioxane (50 ml) was added Pd (PPh3) 4 (884 g, 0.77 mmol). The mixture was de-gassed three times, and heated at 100C overnight. The mixture was cooled and diluted with EtOAc (120 ml) and washed with a 10% potassium fluoride solution (200 ml). The organic layer was washed with sat. NaCl (50 ml), dried over Na2SO4, filtered, and evaporated. The residue was taken up in anhydrous 1,4-dioxane (75 ml), and Description 93 (1.55 g, 7 mmol), lithium chloride (1.78 g, 42 mmol), and copper (I) iodide (266 mg, 1.4 mmol) added, followed by Pd (PPh3) 4 (808 mg, 0.7 mmol). The mixture was de-gassed 3 times and heated at 100C for 3 days. The mixture was poured into water (200 ml), and extracted with EtOAc (2 x 100 ml), the combined EtOAc layers were washed with water (150 ml), sat. NaCl (100 ml), dried over Na2SO4, filtered and evaporated. The residue was purified by column chromatography on silica (eluent: 2% MeOH in DCM + 0.5% NH40H) to give the title compound (100 mg, 3%).'H NMR (360 MHz, DMSO-d6) 7.18 (2 H, br s), 7.66-7. 86 (3 H, m), 8.55 (1 H, dd, J 8.1 and 1. 8), 8. 58 (1 H, d, J4. 2), 8.64 (1 H, d, J8. 4), 9.16 (1 H, dd, J4. 2 and 2.1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate; In 1,4-dioxane; at 20 - 110℃; for 1.0h;Inert atmosphere; | Step 2: 5-(6-Aminopyrimidin-4-yl)-2-(5-chloro-2-methylphenyl)-1-[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrole- 3-carbonitrile (VI)Into a 50 mL round bottom flask equipped with a stir bar, condenser and 3-way valve connected to argon and vacuum 2-(5-chloro-2-methylphenyl)-5-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yl)-1-[2-(trimethylsilyl)ethoxy] methyl}-1 H-pyrrole-3-carbonitrile coming from the previous step, <strong>[53557-69-0]6-iodopyrimidin-4-amine</strong> (740 mg, 3.35 mmol), 2M Na2C03 (3.35 mL, 6.70 mmol) and dioxane (22 mL) were charged at room temperature. The resulting reaction mixture was degassed three times back filling with argon each time before being charged PdC (dppf) (182 mg, 0.223 mmol). The resulting reaction mixture was degassed four times back filling with argon each time and then warmed to 110 C for 1 h. The reaction mixture was cooled to room temperature, filtered through a pad of Celite, washed with EtOAc, and the filtrate was concentrated and then diluted with EtOAc (30 mL) and water (10 mL). The two layers were separated, and the aqueous layer was extracted with EtOAc (25 mL). The combined organic fractions were washed with aqueous brine (2 x 20 mL), dried over a2S04, filtered and concentrated under reduced pressure. The residue was purified by Biotage SP1 Flash Chromatography (DCM/MeOH/7N NH3in MeOH 97/2/1) to afford the title compound (343 mg, 35%, 2 steps).. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; caesium carbonate; In 1,4-dioxane; water;Inert atmosphere; | Step 2: 5-(6-Aminopyrimidin -yl)-2-(5-chloro-2-ethylphenyl)-1-(phenylsulfonyl)-1 H^yrrole-3-carbon (VI) 2-(5-Chloro-2-ethylphenyl)-1-(phenylsulfonyl)-5-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yl)-1 - -pyrrole-3-carbonitrile (2.77 mmol), <strong>[53557-69-0]6-iodopyrimidin-4-amine</strong> (918 mg, 4.16 mmol), PdCI2(dppf) (226 mg, 0.277 mmol) and Cs2C03(2.71 g, 8.31 mmol) were degassed and back filled with argon and then dissolved in dioxane (20 mL) and water (4 mL) under nitrogen. The reaction mixture was stirred at room temperature over night, then diluted with EtOAc, washed with aqueous brine, dried over Na2S04, filtered and concentrated under reduced pressure. The residue was purified by Biotage SP1 Flash Chromatography (DCM/MeOH/NH37 N in MeOH 95/5/0.5) to afford the title compound (540 mg, 39%, 2 steps).1H NMR (600 MHz, DMSO-d6) delta 8.45 (d, J = 0.92 Hz, 1 H), 7.82 (t, J = 7.42 Hz, 1 H), 7.71 - 7.78 (m, 1 H), 7.59 - 7.63 (m, 1 H), 7.56 (dd, J = 2.29, 8.33 Hz, 1 H), 7.39 (d, J = 8.43 Hz, 1 H), 7.11 (br. s., 1 H), 7.09 (s, 1 H), 6.83 (d, J = 2.20 Hz, 1 H), 6.64 (d, J = 1.10 Hz, 1 H), 2.03 - 2.24 (m, 2H), 1.01 (t, J = 7.60 Hz, 3H).HRMS (ESI) m/z calcd for C23H18N502SCI + H+464.0943, found 464.0938. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate; In 1,4-dioxane; water; at 20℃;Inert atmosphere; | Step 5: Ethyl 5-(6-aminopyrimidin-4-yI)-2-phenyl)-1 -(phenylsulfonyl)-1 H-pyrrole-3-carboxylate (IX) Ethyl 2-phenyl-1 -(phenylsulfonyl)-5-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yl)-1 H-pyrrole-3-carboxylate (1.24 mmol), <strong>[53557-69-0]6-iodopyrimidin-4-amine</strong> (411 mg, 1.86 mmol), Pd012(dppf) (101 mg, 0.124 mmol) and Na2003 (394 mg, 372 mmo) were degassed and back fWed wfth argon and then dssoved n doxane (12 mL) and water (1.9 mL) under nftrogen. The reaction mixture was stirred at room temperature over night, then diluted with EtOAc, washed withaqueous brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified byBiotage SP1 Elash Chromatography (DCM/MeOH/NH3 7 N in MeOH 95/5/0.5) to afford the title compound (240 mg,43%, 2 steps).1H NMR (600 MHz, DMSO-d6) 8.42 (d, J= 1.1 Hz, 1H), 7.72 (quin, J= 4.3 Hz, 1H), 7.48-7.53 (m, 4H), 7.37-7.44 (m, 1 H), 7.26 (t, J = 7.7 Hz, 2H), 7.00 (s, 2H), 6.96 (dd, J = 1.2, 8.1 Hz, 2H), 6.82 - 6.86 (m, 1 H), 6.67 - 6.70 (m, 1 H),3.95 (q, J = 7.0 Hz, 2H), 0.87 - 1.01 (m, 3H).HRMS (ESI) m/z calcd for C23H20N404S + H 449.1278, found 449.1273. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate; In 1,4-dioxane; at 20 - 110℃; for 1.0h; | Step 9: 4-(6-Aminopyrimidin-4-yl)-1-(5-chloro-2-methylphenyl)-1 H-pyrrole-2-carbonitrilento a 50 mL round bottom flask equpped wfth a stir bar, condenser and 3-way vave connected to argon and vacuum 1 -(5-chloro-2-methylphenyl)-4-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yl)-1 H-pyrrole-2-carbonitrile coming from the previous step, <strong>[53557-69-0]6-iodopyrimidin-4-amine</strong> (663 mg, 3.0 mmol), 2M Na2003 (3.0 mL, 6.0 mmol) and dioxane (20 mL) were charged at room temperature. The resuWng reacton mixture was degassed three times back fAhng wfthfour times back flWng wfth argon each time and then warmed to 110 C for 1 h. The reacton mixture was coo?ed to room temperature, fUtered through a pad of Cehte, washed wfth EtOAc, and the fUtrate was concentrated and then dUuted wfth EtOAc and water. The two ayers were separated, and the aqueous ayer was extracted wfth EtOAc, The combned organic fractions were washed wfth aqueous brne, dried over Na2SO4, fNtered and concentrated under reduced pressure. The residue was purified by Biotage SP1 Elash Chromatography (DCM/MeOH/7N NH3 n MeOH95/5/05) to afford the tfte compound (291 mg, 47%, 2 steps).1H NMR (400 MHz, DMSO-d6) 8.33 (d, J = 0.98 Hz, 1 H), 7.96 (d, J = 1.7 Hz, 1 H), 7.64 - 7.69 (m, 2H), 7.55 - 7.61(m, 1H), 7.50-7.54 (m, 1H), 6.81 (s, 2H), 6.65 (d, J = 1.1 Hz, 1H), 2.10 (s, 3H).HRMS (ESI) m/z calcd for C16H12C1N5 + H 310.0854, found 310.0858. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
40% | With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate; at 110℃; for 0.5h;Inert atmosphere; | Step 12: Ethyl 5-(6-aminopyrimidin-4-yI)-3-(5-chloro-2-methylphenyl)-1-(phenylsulfonyl)-1 H-pyrrole-2-carboxylate (XVII) Ethyl 3-(5-chloro-2-methylphenyl)-1 -(phenylsulfonyl)-5-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yI)-1 H-pyrrole-2-carboxylate, <strong>[53557-69-0]6-iodopyrimidin-4-amine</strong> (221 mg, 1 mmol) and Na2003 (318 mg, 3 mmol) were dissolved indioxane/water (3/1, 10 mL), The resulting reaction mixture was degassed three times back filling with argon eachtime before being charged PdCI2(dppf) (81 mg, 0.1 mmol). The resulting reaction mixture was degassed four timesback filling with argon each time and then warmed to 110 00 for 30 mm. The reaction mixture was cooled to roomtemperature, filtered through a pad of Celite, washed with EtOAc. The filtrate was concentrated and then diluted withEtOAc, washed with aqueous brine, dried over Na2SO4, filtered and concentrated under reduced pressure. Theresidue was purified by by Biotage SP1 Flash Chromatography (DCM/MeOH/7N NH3 in MeOH 98/2/0.2) to afford thetitle compound (198 mg, 40%).1H NMR (600 MHz, DMSO-d6) 8.23 - 8.30 (m, 3H), 7.77 - 7.83 (m, 1 H), 7.66 - 7.73 (m, 2H), 7.33 - 7.37 (m, 1 H),7.29 - 7.32 (m, 1 H), 7.17 (d, J = 2.20 Hz, 1 H), 7.04 (s, 2H), 6.76 (s, 1 H), 6.63 (d, J = 0.92 Hz, 1 H), 3.99 -4.10 (m,2H), 2.11 (s, 3H), 0.90 (t, J = 7.11 Hz, 3H).HRMS (ESI) m/z calcd for C24H21C1N404S + H 497.1045, found 497.1049. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
220 mg | With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate; In 1,4-dioxane; water; at 110℃; for 2.0h;Inert atmosphere; | Step 16: tert-Butyl 4-(6-aminopyrimidin-4-yI)-2-(5-chloro-2-methylphenyl)-1 H-pyrrole-1 -carboxylate (XXI) The crude tert-butyl 2-(5-chloro-2-methylphenyl)-4-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yl)-1 H-pyrrole-1 -carboxylate (392 mg, 0.94 mmol), Na2003 (250 mg, 2.36 mmol), PdC2(dppf) (77 mg, 0.094 mmol) and <strong>[53557-69-0]6-iodopyrimidin-4-amine</strong> (311 mg, 1.41 mmol) were degassed and purged with argon and suspended in degassed 1,4-dioxane (3 mL) and water (1 mL). The reaction mixture was heated to 110 00 (oil bath temperature) for 2 h. Thesolution was diluted with EtOAc and washed with water. After drying over anhydrous Na2SO4, the organic layer was evaporated. The crude was purified by chromatography on silica gel (hexane/EtOAc 8:2) providing the title compound (220 mg, 58%).1H NMR (600 MHz, DMSQ-d6) 8.55 (s, 1 H), 7.79 (s, 1H), 7.41 (d, 1H), 7.29 (d, 1H), 7.16 (m, 1H), 6.98 (s, 1H),6.66 (s, 1H), 2.30 (s, 3H), 1.44 (s, 9H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With tetrakis(triphenylphosphine) palladium(0); In 1-methyl-pyrrolidin-2-one; at 80℃; for 2.0h;Inert atmosphere; | General procedure: A flask containing a solution of 55-iodide (4.09g, 18.5mmol) in NMP (75ml) was purged with argon for 5min. Zinc cyanide (2.28g, 19.4mmol) and tetrakis(triphenylphosphine)palladium (0) (1.71g, 1.48mmol) were added and the mixture was stirred at 80C for 2h. The mixture was cooled to room temperature, EtOAc (200ml) and 30% aqueous NH4OH (200ml) was added, and stirring was continued for 1h. The layers were separated, the aqueous layer was extracted with EtOAc (4×200ml), and the combined organic layers were concentrated under reduced pressure. Et2O (30ml) was added and the precipitate was collected by filtration and washed with Et2O to deliver 2-aminopyrimidine-4-carbonitrile (1.66g, 13.8mmol, 75% yield) as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogen iodide; sodium iodide; at 20℃; for 48.0h; | To a solution of 6-bromopyrimidin-4-amine (4.17 g, 24 mmol) in 100 mL of HI was added Nal (14.4 g, 96 mmol). The mixture was stirred at ambient temperature for 2 days. Then, the mixture was adjusted to pH=10 with NaOH solution, and the solid was separated and filtered to give 6-iodopyrimidin-4- amine. H NMR (400Mz, DMSO-c/6) delta (ppm): 6.85 (s, 1 H), 6.99(s, 2 H), 7.99 (s, 1 H). | |
With hydrogen iodide; sodium iodide;Reflux; | To a solution of 6-bromopyrimidin-4-amine (8.0 g, 46 mmol) in 100 mL of HI was added Nal (15.0 g, 100 mmol). The mixture was refluxed overnight. Then, the mixture was adjusted to pH=10 with NaOH solution, and the solid was separated and filtered to give 6-iodopyrimidin-4-amine. 1H NMR (400Mz, DMSO-d6) 56.85 (s, 1 H), 6.99(s, 2H), 7.99 (s, 1 H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In N,N-dimethyl-formamide; at 90℃; for 2.0h; | To a solution of <strong>[53557-69-0]6-iodopyrimidin-4-amine</strong> (442 mg, 2 mmol) in 5 mL of DMF was added (Phen)CuCF2CF3 (1.14 g, 3 mmol, purchased from Aspira scientific). The mixture was stirred at 90 C for 2 hours. Then, the mixture was poured into water and extracted with ethyl acetate. The combined organic layers were dried over sodium sulfate, filtered and concentrated under vacuum. The crude product was purified by column chromatography on silica gel to give 6-(1 , 1 ,2,2,2- pentafluoroethyl)pyrimidin-4-amine. H NMR (400Mz, DMSO-c/6) delta (ppm): 6.80 (s, 1 H), 7.50(s, 2 H), 8.47 (s, 1 H). 9F-NMR (300Mz, DMSO-c/6) delta: -79.41 (s, 3 F), -1 16.10 (s, 2 F); ESI-MS(+): 214(M+1 ), ESI-MS(-): 212(M-1 ). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In N,N-dimethyl-formamide; at 90℃;Inert atmosphere; | <strong>[53557-69-0]6-iodopyrimidin-4-amine</strong> (prepared as described in WO 2016071214, 5.83 g, 26.4 mmol) and (1,1,2,2,2Pentafluoroethy)(1,1OphenanthroNneKN1,KN1O)copper (15.1 g, 39.6 mmol) was suspended in dimethylformamide (95.0 mL) in a dried vial under argon. The resulting mixture was heated to 90C over night. The reaction mixture was cooled down to room temperature and filtered over Celite. The filter cake was rinsed with ethyl acetate and the resulting green suspension was washed with aqueous saturated sodium bicarbonate and ammonium hydroxide solution, and then brine. Drying over sodiumsulfate, filtration and concentration in vacuo gave the crude product which was purified by chromatography over silica gel to afford 6-(1,1,2,2,2-pentafluoroethyl)pyrimidin-4-amine. LC-MS: 214 (M+H), Rt: 0.67 min, 1H NMR (400 MHz, Chloroform) delta ppm 5.41 (br s, 2 H) 6.82 (d, J=1 .10 Hz, 1 1-1) 8.71 (s, 1 H) |
A377577 [943006-46-0]
4-Amino-6-iodo-2-methylpyrimidine
Similarity: 0.88
A377577 [943006-46-0]
4-Amino-6-iodo-2-methylpyrimidine
Similarity: 0.88