α,ω-Bis 2-[(3-carboxy-1-oxopropyl)amino]ethyl polyethylene glycol 分子量~4000
B863622 / 1G
CAS:74558-41-1
α,ω-Bis 2-[(3-carboxy-1-oxopropyl)amino]ethyl polyethylene glycol 分子量~4000
B863622 / 250MG
CAS:74558-41-1