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Ethyl 2,4-dimethyl-1H-pyrrole-3-carboxylate Ethyl 5-formyl-2,4-dimethyl-1H-pyrrole-3-carboxylate Ethyl 3,5-dimethyl-1H-pyrrole-2-carboxylate 4-HYDROXYMETHYL-3,5-DIMETHYL-1H-PYRROLE-2-CARBOXYLIC ACID ETHYL ESTER TERT-BUTYL 3,4,5-TRIMETHYL-2-PYRROLECARBOXYLATE ethyl 4-(2-methoxycarbonylethyl)-3,5-dimethyl-1H-pyrrole-2-carboxylate METHYL 5-(BENZYLOXYCARBONYL)-2,4-DIMETHYL-3-PYRROLEPROPIONATE 4-(2-CARBOXYETHYL)-3,5-DIMETHYLPYRROLE-2-CARBOXYLIC ACID, ETHYL ETHER 4-BUTYL-3,5-DIMETHYL-1H-PYRROLE-2-CARBOXYLIC ACID ETHYL ESTER