6-chloro-3,4-dihydro-4-oxo--2H-1-benzothiopyran-2-carboxylic acid (4-ethenylphenyl)methyl ester

6-chloro-3,4-dihydro-4-oxo--2H-1-benzothiopyran-2-carboxylic acid (4-ethenylphenyl)methyl ester · CAS 1135135-45-3