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CAS号: 1884279-18-8 英文名称: ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate 英文同义词: Parecoxib Impurity8;PARECOXIB SODIUM-23;Parecoxib Sodium-23;Parecoxib impurity M: ethyl sulfonate;Parecoxib Sodium Impurity 25(Not Continue);Benzenesulfonic acid, 4-(5-methyl-3-phenyl-4-isoxazolyl)-, ethyl ester;Parecoxib impurity 18/Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate 中文名称: 伐地昔布酸乙酯 中文同义词: 匹杉琼杂质21;伐地昔布酸乙酯;帕瑞昔布钠杂质8;帕瑞昔布杂质4(乙酯);帕瑞昔布杂质M:磺酸乙酯;帕瑞昔布钠杂质25(不再提供) 分子式: C18H17NO4S 分子量: 343.4 沸点 : 464.6±45.0 °C(Predicted) 密度 : 1.239±0.06 g/cm3(Predicted) 酸度系数(pKa): -3.41±0.50(Predicted)