and C4 are shown to be 21-sulfo-N-1-hydroxysaxitoxin-11α- and 11β-hydroxysulfate, confirming the position and identity of the 3 substituents which, with the parent compound, form the array of 12 saxitoxins found in .
通过11β差向异构体的X射线晶体学分析,毒素C3和C4显示为21-磺基-N-1-羟基saxitoxin-11α-和11β-羟基
硫酸盐,从而确定了与母体化合物形成的3个取代基的位置和同一性。 ,形成12种毒素的阵列。