1H-Indolium, 1-((1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene)-2,3-dihydro-5-methoxy-2,3,3-trimethyl-, acetate 2-(2-(2,3-Dihydro-5-methoxy-2,3,3-trimethyl-1H-indol-1-yl)vinyl)-1,3,3-trimethyl-3H-indolium acetate 83949-82-0 EINECS 281-441-8