173908-15-1 1H-Pyrrole-2-carboxylic acid, 1-[(5-chloro-2-nitrophenyl)sulfonyl]-, methyl ester AIDS-043503 AIDS043503 Methyl 1-[(5-Chloro-2-nitrophenyl)sulfonyl]-1H-pyrrole-2-carboxylate Pyrrolyl Phenyl Sulfone deriv.