The so-called red impurity of trypan blue.
D002273:Carcinogens; D002848:Chromatography, DEAE-Cellulose; D002854:Chromatography, Paper; D066298:In Vitro Techniques; D014343:Trypan Blue / Q000032:analysis* / Q000494:pharmacology
D002273:Carcinogens; D014343:Trypan Blue