Similar names: Benzenesulfonic acid, 4-[(4-hydroxy-1-naphthalenyl)azo]-, monosodium salt (9CI); C.I. Acid Orange 20 (7CI); C.I. Acid Orange 20, monosodium salt (8CI); 1333 Orange; 4-p-Sulfophenylazo-1-naphthol monosodium salt; A.F. Orange No. 1; Acid Leather Orange I; Acid Orange 20; Acid Orange I; Aizen Orange I; C.I. 14600; Certiqual Orange I; Dye orange No. 1; Eniacid Orange I; Ext D & C Orange 3; Ext D and C Orange No. 3; External D and C Orange Number 3; FD and C Orange 1; FD and C Orange No. 1; Hispacid Orange 1; Japan Orange 1; Japan Orange 402; Japan Orange No. 402; Java Orange I; Naphthalene Orange I; Naphthol Orange; Neklacid Orange 1; Orange 1 sodium salt; Orange 402; Orange I; Orange I Extra Conc. A Export; Orange IM; Orange No. 402; Tertracid Orange I; Tropaeolin 1; Tropaeolin OOO 1; Yellow 404; α-Naphthol Orange