CI 11725;DAIDAI401;PIGMENTORANGE1;Hansa Yellow 3R;C. I. Pigment Orange 1;Ext.D and C Orange No.1;CI 11725, PIGMENT ORANGE 1;Pigment orange 1 (C.I. 11725);2-[(4-methoxy-2-nitrophenyl)azo]-3-oxo-N-(o-tolyl)butyramide;N-(2-Methylphenyl)-2-(2-nitro-4-methoxyphenylazo)-3-oxobutanamide