Synonyms: 3H-INDOLIUM, 2-[5-(1,3-DIHYDRO-3,3-DIMETHYL-1-OCTADECYL-2H-INDOL-2-YLIDENE)-1,3-PENTADIENYL]-3,3-DIMETHYL-1-OCTADECYL-, PERCHLORATE;2-[(1E,3E)-5-(3,3-DIMETHYL-1-OCTADECYL-1,3-DIHYDRO-2H-INDOL-2-YLIDENE)-1,3-PENTADIENYL]-3,3-DIMETHYL-1-OCTADECYL-3H-INDOLIUM PERCHLORATE;1,1'-DIOCTADECYL-3,3,3',3'-TETRAMETHYLINDODICARBOCYANINE PERCHLORATE;DILC18(5);DIIC18(5);DIIC18(5) OIL;'DID' OIL;DID