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CAS号: 57281-13-7 英文名称: Ethyl 5-oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylate 英文同义词: MFCD02853194;Ribavirin Impurity 26;Ribavirin SM2 Impurity H;Ribavirin Impurity SM2- H;methyl 5-oxo-1,2-dihydro-1,2,4-triazole-3-carboxylate;Ethyl 5-oxo-4,5-dihydro-1H-[1,2,4]triazole-3-carboxylate;methyl 5-oxo-4,5-dihydro-1H-1,2,4-triazole-3-carboxylate;methyl 5-oxo-2,5-dihydro-1H-1,2,4-triazole-3-carboxylate;5-oxo-1,2-dihydro-1,2,4-triazole-3-carboxylic acid methyl ester;5-keto-1,2-dihydro-1,2,4-triazole-3-carboxylic acid methyl ester 中文名称: 5-氧代-1,2-二氢-1,2,4-三唑-3-羧酸甲酯 中文同义词: 利巴韦林杂质26;利巴韦林起始物料2-杂质H;5-氧代-1,2-二氢-1,2,4-三唑-3-羧酸甲酯;5-氧代-1,2-二氢-1,2,4-三唑-3-甲酸甲酯;5-氧代-4,5-二氢-1,2,4-1H-三氮唑-3-甲酸甲酯;5-氧代-4,5-二氢-1H-1,2,4-三唑-3-羧酸甲酯(利巴韦林起始物料2杂质H);5-氧代-4,5-二氢-1H-1,2,4-三唑-3-羧酸甲酯(利巴韦林起始物料2杂质H) 分子式: C4H5N3O3 分子量: 143.1 熔点 : 235-237 °C 密度 : 1.73±0.1 g/cm3(Predicted) 酸度系数(pKa): 7.07±0.20(Predicted)