C.I. Natural Red 4:1
[CAS# 1328-60-5]

Identification

• Name: C.I. Natural Red 4:1
• Synonyms: C.I. Natural Red 4:1; CARMINE ALUM LAKE; ALUMINIUM CARMINE
• Molecular Formula: C₂₂H₂₀AlO₁₃
• Molecular Weight: 519.37
• CAS Registry Number: 1328-60-5
• EINECS: 215-527-3
• SMILES: OC[C@H]1O[C@H]([C@@H]([C@H]([C@@H]1O)O)O)c1c(O)c2c(c(c1O)[O-])C(=O)c1c(C2=O)c(C)c(c(c1)[O-])C(=O)[O-].[AlH3+3]
• InChI: 1S/C22H20O13.Al.3H/c1-4-8-5(2-6(24)9(4)22(33)34)13(25)10-11(15(8)27)16(28)12(18(30)17(10)29)21-20(32)19(31)14(26)7(3-23)35-21;;;;/h2,7,14,19-21,23-24,26,28-32H,3H2,1H3,(H,33,34);;;;/q;+3;;;/p-3/