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CAS No. : | 239097-74-6 | MDL No. : | MFCD13190363 |
Formula : | C7H6N2O | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 134.14 g/mol | Pubchem ID : | 18373421 |
Synonyms : |
|
Num. heavy atoms : | 10 |
Num. arom. heavy atoms : | 9 |
Fraction Csp3 : | 0.0 |
Num. rotatable bonds : | 0 |
Num. H-bond acceptors : | 2.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 38.41 |
TPSA : | 52.05 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | Yes |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -6.44 cm/s |
Log Po/w (iLOGP) : | 1.34 |
Log Po/w (XLOGP3) : | 0.95 |
Log Po/w (WLOGP) : | 1.42 |
Log Po/w (MLOGP) : | 0.51 |
Log Po/w (SILICOS-IT) : | 1.23 |
Consensus Log Po/w : | 1.09 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -1.94 |
Solubility : | 1.55 mg/ml ; 0.0116 mol/l |
Class : | Very soluble |
Log S (Ali) : | -1.63 |
Solubility : | 3.14 mg/ml ; 0.0234 mol/l |
Class : | Very soluble |
Log S (SILICOS-IT) : | -2.52 |
Solubility : | 0.403 mg/ml ; 0.00301 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 1.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 2.31 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H332-H335 | Packing Group: | N/A |
GHS Pictogram: |
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* 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 |
---|---|---|
95% | at 0 - 20℃; for 3.08333 h; | To an ice cold stirred solution of SnCl4 (1.828 g, 7.02 mmol) in 12M HCl (0.5 mL) was added 5-nitro-1,2-benzoxazole (140 mg, 0.86 mmol) in one portion at 0 C. Then, 5 minutes later, a solution of SnCl2.2H2O (792 mg, 3.51 mmol) in 12M HCl (0.5 mL) was added dropwise at 0 C to the reaction mixture, followed by the addition of another 1.0 mL of 12M HCl. Then, the reaction mixture was stirred at room temperature for 3 hours, and extracted with Et2O. The aqueous layer was basified to pH ~8 with saturated NaHCO3, and extracted with EtOAc. The organic phase was dried over anhydrous Na2SO4, filtered, concentrated and dried in vacuo to give 1,2-benzoxazol-5-amine as a colorless solid (110 mg, 95percent).1H NMR (400 MHz, CDCl3) δ 8.54 (s, 1H), 7.42 (d, J = 8.4 Hz, 1H), 6.94 (dd, J = 8.4 Hz, 2.0 Hz, 1H), 6.91 (d, J = 2.0 Hz, 1H) ES-MS m/z: 135.1 [M+H]+. LC-MS Purity (214 nm): 90percent; tR = 1.32 min. |
95% | With hydrogenchloride; tin(II) chloride dihdyrate; tin(IV) chloride In water at 0 - 20℃; for 3 h; | To an ice cold stirred solution of SnCl4(1.828 g, 7.02 mmol) in 12M HC1 (0.5 mL) was added 5-nitro-l,2-benzoxazol (140 mg, 0.86 mmol) in one portion at 0 °C. 5 minutes later, a solution of SnCl2.2H20 (792 mg, 3.51 mmol) in 12M HC1 (0.5 mL) was added dropwise at 0 °C, followed by the addition of another 1.0 mL of 12M HC1. Then the reaction mixture was stirred at room temperature for 3 hours, and extracted with Et20. The aqueous layer was basified to pH ~8 with saturated NaHCC^, and extracted with EtOAc. The organic phase was dried over anhydrous Na2S04, filtered, concentrated and dried in vacuo to give 1,2-benzoxazol- 5-amine as a colorless solid (110 mg, 95percent).XH NMR (400 MHz, CDC13) δ 8.54 (s, 1H), 7.42 (d, J= 8.4 Hz, 1H), 6.94 (dd, J= 8.4 Hz, 2.0 Hz, 1H), 6.91 (d, J= 2.0 Hz, 1H) ES-MS m/z: 135.1 [M+H]+. LC-MS Purity (214 nm): 90percent; tR= 1.32 min. |
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