English name: deoxyandrographolide; 2(5h)-furanone, 3-[2-[(4as, 5r, 6r, 8ar)-3, 4, 4a, 5, 6, 7, 8, 8a-octahydro-6-hydroxy-5-(hydroxymethyl)-2, 5, 8a-trimethyl-1-naphthalenyl]ethyl]-
Cas registry number: 79233-15-1
Molecular formula: c20 h30 o4
Molecular weight: 334.45
Purity: hplc more than 98%
Appearance: colorless needle crystal
Solubility: soluble in methanol, ethanol, acetone, pyridine and chloroform, soluble in benzene and ethyl ether.
Boiling point (predicted)value: 511.7 more or less 50.0 degrees centigrade | condition: press: 760 torr
Density (predicted)value: 1.123 more or less 0.06 g/cm3 | condition: temp: 20 degrees centigrade press: 760 torr
Pka (predicted)value: 14.89 more or less 0.70 | condition: most acidic temp: 25 degrees centigrade
Botanic source: leaves of andrographis paniculata(burm.F.)nees.
Test condition: rp-hplc: methanol: water(60:40), ?: 226nm(for reference)
Storage: 2-8 degrees centigrade, keep container tightly in a dry place, out of light.
