1,3-Dihydro-3-(dihydro-6,6-dimethyl-4-oxo-2H-pyran-3(4H)-ylidene)-2H-indol-2-one 118959-32-3 2H-Indol-2-one, 1,3-dihydro-3-(dihydro-6,6-dimethyl-4-oxo-2H-pyran-3(4H)-ylidene)- 3-(2,2-Dimethyltetrahydropyranyliden-4-one)oxindole 3-(Tetrahydro-6,6-dimethyl-4-oxo-2H-pyran-3-ylidene)-1H-indol-2(3H)-one BRN 5554234