1-ETHENYLCYCLOHEXENE 1-Vinyl-1-cyclohexene 1-Vinylcyclohexene 2-Vinylcyclohexene 2622-21-1 4-05-00-00405 (Beilstein Handbook Reference) BRN 1236528 Cyclohexene, 1-ethenyl- Cyclohexene, 1-vinyl- EINECS 220-070-8 HSDB 5888