Sugar chain-capturing substance and use thereof

摘要

The invention provides a method for preparing a sample characterized by binding substance A containing a hydrazide group to a sugar chain and/or a sugar derivative via hydrazone formation between the hydrazide group of the substance A and the reducing end of the sugar chain and/or sugar derivative thereby to enable the separation and purification of the sugar chain and/or sugar derivative for an analytical sample from a biological sample containing the sugar chain and/or sugar derivative by a simple operation.