A method for preparing an analysis sample from a sample containing a glycan, includes: performing esterification reaction that subjects at least a part of a sialic acid included in the glycan to esterification other than lactonization; and performing amidation reaction that converts an esterified form of a sialic acid modified through the esterification into an amidated form through contacting the sample with an amidation reaction solution containing at least one compound selected from the group consisting of ammonia, amines, hydrazine, hydrazine derivatives, and hydroxyamine, and salts thereof to be reacted with the sialic acid modified through the esterification.
一种从含有聚糖的样品中制备分析样品的方法,包括进行酯化反应,使包含在聚糖中的至少一部分
硅酸进行除内酯化以外的酯化反应;以及 进行酰胺化反应,通过将样品与含有至少一种选自由
氨、胺、
肼、
肼衍
生物和
羟胺及其盐组成的组的化合物的酰胺化反应溶液接触,使通过酯化反应修饰的
硅酸的酯化形式转化为酰胺化形式。