FD&C Blue No. 1 aluminum lake

• CAT Number: I014380
• CAS Number: 68921-42-6
• Molecular Formula: C37H36N2O9S3
• Molecular Weight: 748.88
• Purity: ≥95%
• Synonyms: FD&C Blue No. 1 aluminum lake; Blue 1 lake; Brilliant Blue FCF Lake; EC 272-939-6; Japan Blue 1 aluminum lake; FD and C Blue No. 1 Lake;;3-((ethyl((1E,4E)-4-((4-(ethyl(3-sulfobenzyl)amino)phenyl)(2-sulfophenyl)methylene)cyclohexa-2,5-dien-1-ylidene)ammonio)methyl)benzenesulfonate
• Solubility: Soluble in DMSO
• IUPAC Name: 3-[[N-ethyl-4-[[4-[ethyl-[(3-sulfophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]-(2-sulfophenyl)methyl]anilino]methyl]benzenesulfonate
• InChI: InChI=1S/C37H36N2O9S3/c1-3-38(25-27-9-7-11-33(23-27)49(40,41)42)31-19-15-29(16-20-31)37(35-13-5-6-14-36(35)51(46,47)48)30-17-21-32(22-18-30)39(4-2)26-28-10-8-12-34(24-28)50(43,44)45/h5-24H,3-4,25-26H2,1-2H3,(H2-,40,41,42,43,44,45,46,47,48)
• InChIKey: CTRXDTYTAAKVSM-UHFFFAOYSA-N
• SMILES: CCN(CC1=CC(=CC=C1)S(=O)(=O)[O-])C2=CC=C(C=C2)C(=C3C=CC(=[N+](CC)CC4=CC(=CC=C4)S(=O)(=O)O)C=C3)C5=CC=CC=C5S(=O)(=O)O

FD&C Blue No. 1 aluminum lake（Cat No.:I014380）is a synthetic dye used in food, cosmetics, and pharmaceuticals to impart a blue color. It is created by combining FD&C Blue No. 1 (a water-soluble dye) with aluminum salts to form a pigment that is insoluble in water, making it suitable for use in products like candies, beverages, and makeup. The aluminum lake form enhances stability and resistance to fading, allowing for longer-lasting color in products. While generally considered safe by regulatory agencies, it can cause allergic reactions or sensitivities in some individuals.