4339. Galangin

Nomenclature

CAS number: 548-83-4
3,5,7-Trihydroxy-2-phenyl-4H-1-benzopyran-4-one; 3,5,7-trihydroxyflavone; norizalpinin.
C15H10O5; mol wt 270.24.
C 66.67%, H 3.73%, O 29.60%.

Description and 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).

Chemical structure

Properties

Yellowish needles from ethanol, mp 214-215°. Moderately sol in ethanol, ether; insol in water. Very sol in chloroform, benzene.