147641-54-1 153406-55-4 164066-58-4 4,6(1H,5H)-Pyrimidinedione, 5-(5-(hexahydro-4,6-dioxo-2-thioxo-5-pyrimidinyl)-2,4-pentadienylidene)dihydro-2-thioxo- 5,5'-Pentamethinylbis(2-thiobarbituric acid) 5-(5-(Hexahydro-4,6-dioxo-2-thioxopyrimidin-5-yl)-2,4-pentadienylidene)dihydro-2-thioxo-1H,5H-pyrimidine-4,6-dione 63811-40-5 EINECS 264-470-0