1',3',3'-Trimethyl-8-nitrospiro(2H-1-benzopyran-2,2'-indoline) 1',3'-Dihydro-1',3',3'-trimethyl-8-nitrospiro(2H-1-benzopyran-2,2'-(2H)indole) 5150-50-5 EINECS 225-923-8 Spiro(2H-1-benzopyran-2,2'-(2H)indole), 1',3'-dihydro-1',3',3'-trimethyl-8-nitro-