C.I.73320

Helindon Grey BR

7,7'-Diamino-5,5'-dichloro-Δ2,2'(3H,3'H)-bibenzo[b]thiophene-3,3'-dione

7-Amino-2-(7-amino-5-chloro-3-oxobenzo[b]thiophen-2(3H)-ylidene)-5-chlorobenzo[b]thiophen-3(2H)-one