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Laccaic acid information


Laccaic acid A
Names
IUPAC name
7-[5-(2-acetamidoethyl)-2-hydroxyphenyl]-3,5,6,8-tetrahydroxy-9,10-dioxoanthracene-1,2-dicarboxylic acid
Other names
Red lac, Shellac, Lac dye
Identifiers
CAS Number
  • 15979-35-8
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:90186
ChemSpider
  • 4590519
PubChem CID
  • 5491415
InChI
  • InChI=1S/C26H19NO12/c1-8(28)27-5-4-9-2-3-12(29)10(6-9)15-22(33)19-18(24(35)23(15)34)20(31)11-7-13(30)16(25(36)37)17(26(38)39)14(11)21(19)32/h2-3,6-7,29-30,33-35H,4-5H2,1H3,(H,27,28)(H,36,37)(H,38,39)
SMILES
  • CC(=O)NCCC1=CC(=C(C=C1)O)C2=C(C3=C(C(=C2O)O)C(=O)C4=CC(=C(C(=C4C3=O)C(=O)O)C(=O)O)O)O
Properties
Chemical formula
 C26H19NO12
Molar mass 537.44 g·mol−1
Density 1.7±0.1 g.cm3
Vapor pressure 0.0±0.3 mmHg at 25°C
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Laccaic acids or laccainic acids are a group of five anthraquinone derivatives, designated A through E, which are components of the red shellac obtained from the insect Kerria lacca, similar to carminic acid and kermesic acid.[1] This article focuses primarily on laccaic acid A (LCA).[2][3]

Mixture of milk and lac dye - A ceremony welcoming the newly wed bride to her new home
  1. ^ PubChem. "Kermesic Acid". pubchem.ncbi.nlm.nih.gov. Retrieved 2023-03-28.
  2. ^ PubChem. "Laccaic acid A". pubchem.ncbi.nlm.nih.gov. Retrieved 2023-03-27.
  3. ^ "laccaic acid A | C26H19NO12 | ChemSpider". www.chemspider.com. Retrieved 2023-03-27.

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