CAS NO. 2435-59-8 | 5,5'-Diamino-Î”3,3'(2H,2'H)-bipyridine-2,2',6,6'(1H,1'H)-tetraone |

5,5'-Diamino-Î”3,3'(2H,2'H)-bipyridine-2,2',6,6'(1H,1'H)-tetraone

Indigoidin	5,5'-Diamino-Î”3,3'(2H,2'H)-bipyridine-2,2',6,6'(1H,1'H)-tetraone
5-Amino-3-(5-amino-1,2,3,6-tetrahydro-2,6-dioxopyridin-3-ylidene)-2,6(1H,3H)-pyridinedione