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| CAS号 : | 491-36-1 |
精确质量 : | 146.04800 |
| 分子式 : | C8H6N2O |
logP : | 0.92310 |
| 分子量 : | 146.14600 |
PSA : | 45.75000 |
4-羟基喹唑啉 | |
4-Hydroxyquinazoline | |
491-36-1 | |
C8H6N2O | |
146.14600 | |
45.75000 | |
0.92310 | |
146.04800 |
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1.666
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白色固体
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137.3ºC
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303.5ºC at 760 mmHg
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216-219 °C(lit.)
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1.31 g/cm3
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Stable at room temperature in closed containers under normal storage and handling conditions.
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Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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VA2300000
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3
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29335995
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S26-S37/39-S36/37/39-S22
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Xn
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R22; R36/37/38
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2933990090
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2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0% | |
2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
<p>由邻氨基苯甲酸与甲酰胺环合而得。将邻氨基苯甲酸和甲胺加入不锈钢反应锅内，搅拌加热4h，油浴温度140-150℃。在搅拌下加入冷水，待温度降至60℃以下时，将产物加水搅拌均匀，放置过夜。过滤、水洗、醇洗，在100-120℃干燥，得喹唑酮，收率80%。</p> | |
<p>4-(3H)喹唑啉酮是杀螨剂喹螨醚的中间体。该品是抗心律失常药常咯啉的中间体。</p> |
