Pharmaceutical Reference Standards / Impurity Standards

Parecoxib
Parecoxib Sodium
Parecoxib Sulfonamide
Parecoxib Impurity 20
Parecoxib Impurity 2
Parecoxib Impurity 22
Deoxybenzoin Oxime
Parecoxib Impurity 5
Parecoxib Impurity 21
Parecoxib Impurity E
Sodium;acetyl(4-(5-methyl-3-phenylisoxazol-4-yl)phenylsulfonyl)amide
Parecoxib Impurity 27