化学元素，生物碱类，来源于葫蔓藤科植物葫蔓藤钩吻

gelsemine; 3-ethenyl-1-methyl-2,3,3a,7,8,8a-hexahydro-1H,5H-spiro[3,8,5-(ethane[1,1,2]triyl)oxepino[4,5-b]pyrrole-4,3'-indol]-2'(1'H)-one; (3S,3aS,4S,5R,8S,8aS,9R)-3-ethenyl-1-methyl-2,3,3a,7,8,8a-hexahydro-1H,5H-spiro[3,8,5-(ethane[1,1,2]triyl)oxepino[4,5-b]pyrrole-4,3'-indol]-2'(1'H)-one; (3S,3aS,4S,5R,8S,8aS)-3-ethenyl-1-methyl-2,3,3a,7,8,8a-hexahydro-1H,5H-spiro[3,8,5-(ethane[1,1,2]triyl)oxepino[4,5-b]pyrrole-4,3'-indol]-2'(1'H)-one; (3S,3aR,4S)-3-ethenyl-1-methyl-2,3,3a,7,8,8a-hexahydro-1H,5H-spiro[3,8,5-(ethane[1,1,2]triyl)oxepino[4,5-b]pyrrole-4,3'-indol]-2'(1'H)-one

密度： 1.33g/cm3

沸点： 493.4°C at 760 mmHg

闪点： 252.2°C

蒸汽压： 7.08E-10mmHg at 25°C

熔点: 181-183°C

性状white powder

InChI： InChI=1/C20H22N2O2/c1-3-19-10-22(2)16-11-9-24-15(8-13(11)19)20(17(16)19)12-6-4-5-7-14(12)21-18(20)23/h3-7,11,13,15-17H,1,8-10H2,2H3,(H,21,23)/t11?,13?,15?,16?,17-,19+,20+/m1/s1

危险品标志: T+：极高毒性物质

危险品运输编号: UN 1544 6.1/PG 2