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