4913 Acid yellow 23 Acid yellow 23 is a colour additive for desserts, candies, preserves, beverages, prepared meats and canned and frozen vegetables. It is a putative food allergen. 1934-21-0 16013 C16H9N4Na3O9S2 White powder. No indication of carcinogenicity to humans (not listed by IARC). 2014-09-11T05:19:33Z 2026-04-05T15:36:40Z C07574 9405 true [Na+].[Na+].[Na+].OC1=C(\N=N\C2=CC=C(C=C2)S([O-])(=O)=O)C(=NN1C1=CC=C(C=C1)S([O-])(=O)=O)C([O-])=O C16H9N4Na3O9S2 InChI=1S/C16H12N4O9S2.3Na/c21-15-13(18-17-9-1-5-11(6-2-9)30(24,25)26)14(16(22)23)19-20(15)10-3-7-12(8-4-10)31(27,28)29;;;/h1-8,21H,(H,22,23)(H,24,25,26)(H,27,28,29);;;/q;3*+1/p-3/b18-17+;;; YXHBBEQKMVAJOH-GLCFPVLVSA-K 534.363 533.950403311 Exogenous Solid HMDB39116 10606981 CHEM003814 DTXSID1021455 NS00075656 trisodium 5-hydroxy-1-(4-sulfonatophenyl)-4-[(E)-2-(4-sulfonatophenyl)diazen-1-yl]-1H-pyrazole-3-carboxylate