Solvent Red 43

• CAT Number: M058475
• CAS Number: 15086-94-9
• Molecular Formula: C20H8Br4O5
• Molecular Weight: 647.89
• Purity: ≥95%
• Storage: -20°C
• IUPAC Name: 2',4',5',7'-tetrabromo-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
• InChI: InChI=1S/C20H8Br4O5/c21-11-5-9-17(13(23)15(11)25)28-18-10(6-12(22)16(26)14(18)24)20(9)8-4-2-1-3-7(8)19(27)29-20/h1-6,25-26H
• InChIKey: DBZJJPROPLPMSN-UHFFFAOYSA-N
• SMILES: C1=CC=C2C(=C1)C(=O)OC23C4=CC(=C(C(=C4OC5=C(C(=C(C=C35)Br)O)Br)Br)O)Br

Solvent Red 43 (Cat No.: M058475) is a synthetic azo dye characterized by its bright red color and lipophilic nature. It is primarily used for coloring oils, waxes, plastics, hydrocarbons, and cosmetic products such as lipsticks. With excellent lightfastness and thermal stability, it is valued for applications requiring long-lasting pigmentation. Its structure includes azo (-N=N-) linkages and aromatic rings, contributing to its vivid hue and solvent solubility. Regulatory approval may vary by region, especially for use in products involving skin or food contact.