1-Pyrroline, 3,3-diphenyl-2-ethyl- 3,3-Diphenyl-2-ethyl-1-pyrroline 4-20-00-04115 (Beilstein Handbook Reference) 5-Ethyl-3,4-dihydro-4,4-diphenyl-2H-pyrrole 53067-74-6 BRN 0016620 EINECS 258-342-3