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决奈达隆 决奈达隆
中间体141645-16-1
[英文名]2-Butyl-3-(4-hydroxybenzoyl)-5-nitrobenzofuran
[CAS]141645-16-1
[分子式]C19H17NO5
[分子量]339.34
项目 Items | 标准参数 Specifications | 结果 Results |
外观 Appearance | White or slight grety powder | Complies |
鉴别 Identification | H-1 NMR spectrum | Complies |
单个杂质(HPLC) Individual impurity | <0.5% | 0.25% |
总杂 Total impurity(HPLC) | <2.0% | 0.95% |
熔点 Melting point | 126.0-132.0℃ | 129.8-130.7℃ |
干燥失重 Drying loss | ≤0.5% | 0.10% |
含量 Assay (HPLC) | ≥98.0% | 99.2% |
结果 Results | The product conforms to the above specifications |