Synonyms: 3H-Indolium,2-[2-(3,4-dihydro-6-methoxy-1(2H)-quinolinyl)ethenyl]-1,3,3-trimethyl-,chloride; 3H-Indolium,2-[2-(3,4-dihydro-6-methoxy-1(2H)-quinolyl)vinyl]-1,3,3-trimethyl-, chloride(8CI); Quinolinium,1-[(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-1,2,3,4-tetrahydro-6-methoxy-,chloride (9CI)