3,3'-Diethyloxacarbocyanine 3,3'-Diethyloxacarbocyanine iodide 37069-75-3 905-96-4 Benzoxazolium, 3-ethyl-2-(3-(3-ethyl-2(3H)-benzoxazolylidene)-1-propenyl)- DiOC2 Dioc2(3)