1-((2-Benzothiazolyl)azo)-2-naphthol 1-(2-Benzothiazolylazo)-2-naphthalenol 1-(2-Benzothiazolylazo)-2-naphthol 1-2-(Benzothiazolylazo)-2-naphthol 2-((2-Hydroxy-1-naphthalenyl)azo)benzothiazole 2-Naphthalenol, 1-(2-benzothiazolylazo)- 3012-50-8 EINECS 221-145-8