α-Saxitoxinol is an epimer of Dihydtosaxitoxin and a derivative of saxitoxin. α-Saxitoxinol represents approximately 3.7% of the biological activity of Saxitoxin (a neurotoxin)[1].
References
[1] Frank E. Koehn, et al. Derivatives of saxitoxin. Bioorganic Chemistry. Volume 10, Issue 4. December 1981, Pages 412-428