Parecoxib Impurity C

Chemical Name: N-((3-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)propionamide compound with N-((3-(5-methyl-4-phenylisoxazol-3-yl)phenyl)sulfonyl)propionamide (1:1)

Smile: CC1=C(C(C2=CC(S(=O)(NC(CC)=O)=O)=CC=C2)=NO1)C3=CC=CC=C3.O=S(C4=CC=CC(C5=C(C)ON=C5C6=CC=CC=C6)=C4)(NC(CC)=O)=O