Synonyms: CI 26100;1-[4-(Phenylazo)phenylazo]-2-naphthol; CERASIN RED;D AND C RED NO 17; HERXHEIMER FAT STAIN;Solvent Red 23; Sudan Red; FAT PONCEAU G; C.I. 26100; Transparent Red Hrr; 1-[[P-(PHENYLAZO)PHENYL]AZO]-2-NAPHTHOL; C.I.Solvent Red 23; Transparent Red HRR; FAT SOLUBLE SUDAN; CI NO 26100;