2-Amino-4-hydroxybenzothiazole (CAS NO.7471-03-6) is also called as 4-Hydroxy-2-aminobenzothiazole ; Benzothiazole, 2-amino-4-hydroxy- ; 4-Benzothiazolol, 2-amino- (9CI) ; Benzothiazole, 2-amino-4-hydroxy- .