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Catalog No.:A20065  
Product: Parecoxib impurity  
CAS No. 509074-26-4  
Chemical Name: 4-(5-methyl-3-phenylisoxazol-4-yl)benzene-1-sulfonyl chloride  
Molecular Formula: C16H12ClNO3S  
Molecular Weight: 333.79  
Assay:95%  
Appearance:  
SMILES:CC1=C(C2=CC=C(S(=O)(Cl)=O)C=C2)C(C3=CC=CC=C3)=NO1  
Storage Condition:  
Remark: