A new xanthanolide was isolated from the aerial parts of Carpesium longifolium. Its structure was elucidated as 1, 4-epoxy-5?hydroxy-10酘-xantha-11(13)-en-12,
Capillary zone electrophoresis (CZE) was applied to study the interaction between netropsin and a 14mer double stranded DNA (dsDNA). The binding constant of th