Polyethylenimine, branched (MW 1,200)
Polyethylenimine, branched, MW 1200 (bPEI 1200)
Polyethylenimine, branched (MW 1,800)
Polyethylenimine, branched (MW 2,000)
Polyethylenimine, branched (MW 50,000-100,000)
Poly(ethylene glycol) [MW 3,400; pharma grade]