1500-91-0 2-Acetyl-3,5-dimethyl-4-ethyl-pyrrole 4-Ethyl-3,5-dimethylpyrrol-2-yl methyl ketone 5-21-07-00264 (Beilstein Handbook Reference) BRN 0123442 KETONE, 4-ETHYL-3,5-DIMETHYLPYRROL-2-YL METHYL