Synonyms: 2-Naphthalenol,1-[(2,5-dimethoxyphenyl)azo]- (9CI); 2-Naphthol, 1-(2,5-dimethoxyphenylazo)-(6CI); C.I. Solvent Red 80 (7CI,8CI); 1-(2,5-Dimethoxyphenylazo)-2-naphthol;1-[1-(2,5-Dimethoxyphenyl)azo]-2-naphthol; 2,5-Dimethoxybenzeneazo-b-naphthol; C.I. 12156; Citrus Red2; Citrus Red No. 2; E 121; Solvent Red 80