180905-82-2 1H-Pyrrole-2-carboxylic acid, 1-[(5-chloro-2-nitrophenyl)sulfonyl]-, ethyl ester AIDS-043505 AIDS043505 Ethyl 1-[(5-Chloro-2-nitrophenyl)sulfonyl]-1H-pyrrole-2-carboxylate Pyrrolyl Phenyl Sulfone deriv.