Title: Galangin
CAS Registry Number: 548-83-4
CAS Name: 3,5,7-Trihydroxy-2-phenyl-4H-1-benzopyran-4-one
Additional Names: 3,5,7-trihydroxyflavone; norizalpinin
Molecular Formula: C15H10O5
Molecular Weight: 270.24
Percent Composition: C 66.67%, H 3.73%, O 29.60%
Literature References: Isoln from galanga root, Alpininia officinarum, Hance and characterization: E. Jahns, Ber. 14, 2807 (1881). Prepn: T. Heap, R. Robinson, J. Chem. Soc. 129, 2336 (1926); J. J. Chavan, R. Robinson, ibid. 1933, 368. Mutagenicity studies: J. T. MacGregor, L. Jurd, Mutat. Res. 54, 297 (1978); J. P. Brown, P. S. Dietrich, ibid. 66, 223 (1979).
Properties: Yellowish needles from ethanol, mp 214-215°. Moderately sol in ethanol, ether; insol in water. Very sol in chloroform, benzene.
Melting point: mp 214-215°
Galegine Galipine Gallamine Triethiodide Gallein Gallium Chloride

Galangin structure
CAS number 548-83-4 YesY
PubChem 5281616
ChemSpider 4444935 YesY
KEGG C10044 YesY
IUPHAR ligand 410
Jmol-3D images Image 1
Molecular formula C15H10O5
Molar mass 270.24 g/mol
Density 1.579 g/mL
Melting point 214–215 °C
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Galangin is a flavonol, a type of flavonoid. It is found in high concentrations in Alpinia officinarum (lesser galangal)[1] and Helichrysum aureonitens.[2] It is also found in the galangal rhizome (Alpinia galanga)[3] and in propolis.[4] Galangin has been shown to have in vitro antibacterial[5][6] and antiviral activity.[7] The flavonol also inhibits the growth of breast tumor cells in vitro.[8][9]