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Monodisperse Polyethyleneglycol


・Monodisperse (PDI of exactly 1.00) polyethyleneglycols (PEG) which have chains of uniform length allows more accurate characterization and control of physical, chemical and pharmacokinetic properties of the PEG analogs and their synthetic adducts.

・Commercially available PEGs are derived from crude materials by classical polymerization of ethylene oxide, which are necessarily "polydisperse" and exhibit wide distribution of PEG length (PDI is more than 1.03).

・We have established our original stepwise synthetic procedures and have succeeded in obtaining high molecular weight (>5K), monodisperse(PDI<1.000004), homo- and heterobifunctional polyethylene glycols.

Homo type

OH-OH
NH2-NH2
COOH-COOH
N3-N3
SH-SH

Hetero Type

NH2-COOH
FmocNH-COOH
BocNH-COOH
TrtNH-COOH
Trt-OH
Trt-Tos
Tos-OH
N3-OH
N3-COOH
NH2-OH
TrtNH-OH
NH2-N3

Cyclic (Crown ether)

CrownEther

Branch

Branch

Functional groups

Carboxylic acid
Amine
Aldehyde
Azide
Alkyne(acetylene)
Alkene
Maleimide
Nitrile
Thiol Disulfide
Dye Fluorescent
PPG(polypropyleneglycol) List