152612-73-2 6,7-Dichloro-2,3,5,7a-tetrahydro-5-oxopyrrolo(2,1-b)thiazole-3-carboxylic acid, methyl ester CCRIS 7034 Pyrrolo(2,1-b)thiazole-3-carboxylic acid, 6,7-dichloro-2,3,5,7a-tetrahydro-5-oxo-, methyl ester