1642559-63-4

Oxacillin Impurity D Oxacillin EP Impurity D Oxacillin sodium EP impurity D Oxacillin Sodium Impurity D(EP) Oxacillin EP impurity D (mixture of isomers) Oxacillin EP Impurity D (Mixture of Diastereomers) 4-Thiazolidinecarboxylic acid, 5,5-dimethyl-2-[[[(5-methyl-3-phenyl-4-isoxazolyl)carbonyl]amino]methyl]-, (4S)- (4S)?- 5,?5-?Dimethyl-?2-?[[[(5-?methyl-?3-?phenyl-?4-?isoxazolyl)?carbonyl]?amino]?methyl]?-4-?thiazolidinecarboxyl?ic acid Oxacillin Sodium ImpurityⅠ:(Impurity B1 or B2)(4S)- 5,5-Dimethyl-2-[[[(5-methyl-3-phenyl-4-isoxazolyl)carbonyl]amino]methyl]-4-thiazolidinecarboxylic acid