筛选产品
O-[(N-琥珀酰亚胺基)琥珀酰-氨乙基]-O′-甲基聚乙二醇, average Mn 750
O-[(N-琥珀酰亚胺基)琥珀酰-氨乙基]-O′-甲基聚乙二醇, 2000, chemical modification reagent amine reactive