Synonyms: Propanenitrile,3-[ethyl[3-methyl-4-[2-(6-nitro-2-benzothiazolyl)diazenyl]phenyl]amino]-;Propanenitrile, 3-[ethyl[3-methyl-4-[(6-nitro- 2-benzothiazolyl)azo]phenyl]amino]-;Ambicron Rubine S2BL;Begacron Rubine BLS;Hisperse Rubine C-2R;Kayalon polyester Rubine BL-S;Lumacron Rubine BLS;Lumacron Rubine