英文别名7-[[4-[[4-[[6-[(4-Aminobenzoyl)amino]-1-hydroxy-3-sodiosulfo-2-naphthalenyl]azo]benzoyl]amino]-2-methylphenyl]azo]naphthalene-1,3-disulfonic acid disodium salt; C.I.28255; C.I. Direct Orange 74; Diazo Orange 2R; Phenazo Orange RR; Pontamine Diazo Orange 2R