Parecoxib Impurity 12

Parecoxib Impurity D Parecoxib Sodium Imp.E Valdecoxib IMpurity D Parecoxib Sodium Impurity H Valdecoxib

N-((4-(5-Methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)acetaMide Parecoxib Impurity 3 5-Methyl-3,4-diphenylisoxazole 2-Phenylacetophenone Parecoxib Impurity 16

Parecoxib Impurity 22 Parecoxib Impurity 17 Parecoxib Impurity 9 Parecoxib Impurity 13 Parecoxib Impurity 21

Parecoxib Impurity 14 Parecoxib Impurity 18 Parecoxib Impurity 23