2H-Benz(e)isoindoline, 3a,4,5,9b-tetrahydro-2-methyl-, (Z)- 5-20-07-00181 (Beilstein Handbook Reference) 54915-17-2 BRN 1241918 cis-2-Methyl-3a,4,5,9b-tetrahydrobenzo(e)isoindoline