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NHS and EDC are the frequently-used condensing agents in the condesation reaction, the former one is the key part of forming the intermediate during the condensation, while the latter one acts as a carboxyl-activator and its proper pH range varies from 4 to 6. ÎÒÓùýÕâ¸ö·½·¨ÔÚ±íÃæÓÐôÈ»ùµÄ²ÄÁÏÉϽӹý°±»ù, Â¥Ö÷µÄ¿¹ÌåÉÏÓ¦¸ÃÓа±»ù°É, ¾ßÌåÎïÖʵķ´Ó¦Ê½ÎҼDz»ÇåÁ˵±³õÔÚÍøÉϲ鵽¹ý,¾ÍÊǸöËõºÏ·´Ó¦,Ðγɻ¯Ñ§¼ü,½ÓµÄ±È½ÏÎȶ¨.ף˳Àû.
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