1. Dehydropyrrolizidine Alkaloids in Two Cryptantha Species: Including Two New Open Chain Diesters One of Which is Amphoteric. Issue 3 (15th October 2012) Authors: Colegate, Steven M.; Gardner, Dale R.; Davis, T. Zane; Betz, Joseph M.; Panter, Kip E. Journal: Phytochemical analysis Issue: Volume 24:Issue 3(2013:May) Page Start: 201 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗