English name: gelsemine; spiro[3, 5, 8-ethanylylidene-1h-pyrano[3, 4-c]pyridine-10, 3'-[3h]indol]-2'(1'h)-one, 5-ethenyl-3, 4, 4a, 5, 6, 7, 8, 8a-octahydro-7-methyl-, (3r, 3's, 4ar, 5s, 8s, 8as, 9s)- Cas registry number: 509-15-9 Molecular formula: c20 h22 n2 o2 Molecular weight: 322.40 Purity: hplc more than 98% Appearance: white neddle crystal powder Solubility: soluble in benzene, chloroform, ethyl ether, ethanol and acetone, hardly soluble in water. Melting point (experimental)value: 178 degrees centigrade Boiling point (predicted)value: 493.4 more or less 45.0 degrees centigrade | condition: press: 760 torr Density (predicted)value: 1.33 more or less 0.1 g/cm3 | condition: temp: 20 degrees centigrade press: 760 torr Pka (predicted)value: 13.10 more or less 0.40 | condition: most acidic temp: 25 degrees centigrade Botanic source: root of gelsemium elegans (gardn. Et champ.) benth. Pharmacological effect: exciting central nervous, but poisonus. Storage: 2-8 degrees centigrade, keep container tightly in a dry place, out of light.
