2-(4-Bromo-1-oxonaphthalen-2(1H)-ylidene)-5,7-dibromo-1H-indol-3(2H)-one is a chemical compound registered under CAS number 6219-59-6. It is also known as Algol Blue 4R; Alizarine Indigo 3R; C.I.73815. ReagentForLab supplies 2-(4-Bromo-1-oxonaphthalen-2(1H)-ylidene)-5,7-dibromo-1H-indol-3(2H)-one for laboratory research and bulk production; product code 507030. Send an inquiry for purity, packaging, price and lead time.