英文别名Palbociclib impurity 48; N-[[4-(5-Methyl-3-phenyl-4-isoxazolyl)phenyl]sulfonyl]butanamide; Parecoxib ImpurityO; Parecoxib Sodium Impurity 1; Parecoxib Sodium Impurity 23; N-[4-(5-methyl-3-phenyl-isoxazol-4-yl)phenyl]sulfonylbutanamide; Butanamide, N-[[4-(5-methyl-3-phenyl-4-isoxazolyl)phenyl]sulfonyl]-; PARECOXIB SODIUM H; parecoxib butyl amide impurity; Parecoxib Impurity ZY1 
