173908-13-9 1H-Pyrrole-2-carboxylic acid, 1-[(4-chloro-2-nitrophenyl)sulfonyl]-, methyl ester AIDS-043325 AIDS043325 Methyl 1-[(4-Chloro-2-nitrophenyl)sulfonyl]-1H-pyrrole-2-carboxylate Pyrrolyl Phenyl Sulfone deriv.