1H-Pyrrole-2-carboxylic acid, 5-methyl-, ethyl ester 3284-51-3 5-22-01-00417 (Beilstein Handbook Reference) 5-Methyl-1H-pyrrole-2-carboxylic acid ethyl ester AI3-35114 BRN 0122975 Ethyl 5-methyl-1H-pyrrole-2-carboxylate NSC 81362