Dicloxacillin EP Impurity A

Chemical Name: (4S)-2-[carboxy[[[3-(2,6-dichlorophenyl)-5-methyl-1,2-oxazol-4-yl]carbonyl]amino]methyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid (as per EP)

Synonym: diethyl 2-acetamido-2-(2-(4-octylphenyl)-2-oxoethyl)malonate