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Branched PEGs

Branched PEGs

NOF provides 2-arm activated branched PEGs, as illustrated below. We offer these PEGs with a molecular weight of 20kDa, 40kDa, 60kDa and 80kDa. The available functional groups are amino, aldehyde, maleimide, NHS activated carbonate and NHS activated ester.

Furthermore, NOF has also developed activated branched PEGs, such as 3-arm and 4-arm branched derivatives.

2-arm Branched PEG (SUNBRIGHT® GL2 Series)

2-arm activated branched PEGs can introduce two PEG chains into pharmaceutical substances by a single linkage and improve the pharmacokinetic profile of the pharmaceutical substances efficiently. (Yulia V. et al., Bioconjugate Chem., 23, 1452(2012))
2-arm activated branched PEGs have already been used in some marketed PEGylated drugs.

2-arm Branched PEG (SUNBRIGHT® GL2 Series)

NHS-ester PEG (GS2 Type)

SUNBRIGHT® GL2-200GS2

2arm branched PEG, -(CH2)3NHCO(CH2)3COO-NHS, Mw 20,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-{3-[(1,5-dioxo-5-succinimidyloxy, pentyl)amino]propyloxy} propane
CAS#:
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-400GS2

2arm branched PEG, -(CH2)3NHCO(CH2)3COO-NHS, Mw 40,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-{3-[(1,5-dioxo-5-succinimidyloxy, pentyl)amino]propyloxy} propane

CAS#:
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-600GS2

2arm branched PEG, -(CH2)3NHCO(CH2)3COO-NHS, Mw 60,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-{3-[(1,5-dioxo-5-succinimidyloxy, pentyl)amino]propyloxy} propane

CAS#:
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-800GS2 *

2arm branched PEG, -(CH2)3NHCO(CH2)3COO-NHS, Mw 80,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-{3-[(1,5-dioxo-5-succinimidyloxy, pentyl)amino]propyloxy} propane
CAS#:
Packaging size: 0.1g / 1g / 10g

NHS Carbonate PEG (TS Type)

SUNBRIGHT® GL2-200TS

2arm branched PEG, -COO-NHS, Mw 20,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(succinimidyloxy carboxy) propane
CAS#:
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-800TS *

2arm branched PEG, -COO-NHS, Mw 80,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(succinimidyloxy carboxy) propane

CAS#:
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-600TS

2arm branched PEG, -COO-NHS, Mw 60,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(succinimidyloxy carboxy) propane

CAS#:
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-400TS

2arm branched PEG, -COO-NHS, Mw 40,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(succinimidyloxy carboxy) propane

CAS#:
Packaging size: 0.1g / 1g / 10g

p-Nitrophenyl Carbonate PEG (NP Type)

SUNBRIGHT® GL2-200NP

2arm branched PEG, -COO-pNP, Mw 20,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(4-nitrophenoxy carboxy) propane

CAS#: 697278-22-1
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-400NP

2arm branched PEG, -COO-pNP, Mw 40,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(4-nitrophenoxy carboxy) propane

CAS#: 697278-22-1
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-600NP

2arm branched PEG, -COO-pNP, Mw 60,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(4-nitrophenoxy carboxy) propane

CAS#: 697278-22-1
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-800NP *

2arm branched PEG, -COO-pNP, Mw 80,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(4-nitrophenoxy carboxy) propane

CAS#: 697278-22-1
Packaging size: 0.1g / 1g / 10g

Aldehyde PEG (AL3 Type)

SUNBRIGHT® GL2-600AL3

2arm branched PEG, -CONH(CH2)2-CHO, Mw 60,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-[(3-oxopropylaminocarbonyl)oxy]-propane

CAS#: 1194300-44-1
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-400AL3

2arm branched PEG, -CONH(CH2)2-CHO, Mw 40,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-[(3-oxopropylaminocarbonyl)oxy]-propane

CAS#: 1194300-44-1
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-200AL3

2arm branched PEG, -CONH(CH2)2-CHO, Mw 20,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-[(3-oxopropylaminocarbonyl)oxy]-propane

CAS#: 1194300-44-1
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-800AL3 *

2arm branched PEG, -CONH(CH2)2-CHO, Mw 80,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-[(3-oxopropylaminocarbonyl)oxy] -propane

CAS#: 1194300-44-1
Packaging size: 0.1g / 1g / 10g

Aminopropyl PEG (PA Type)

SUNBRIGHT® GL2-200PA

2arm branched PEG, -(CH2)3-NH2, Mw 20,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(aminopropyloxy) propane

CAS#: 697278-29-8
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-400PA

2arm branched PEG, -(CH2)3-NH2, Mw 40,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(aminopropyloxy) propane

CAS#: 697278-29-8
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-600PA

2arm branched PEG, -(CH2)3-NH2, Mw 60,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(aminopropyloxy) propane

CAS#: 697278-29-8
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-800PA

2arm branched PEG, -(CH2)3-NH2, Mw 80,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(aminopropyloxy) propane

CAS#: 697278-29-8
Packaging size: 0.1g / 1g / 10g

Maleimide PEG (C2 MA Type)

SUNBRIGHT® GL2-200MA

2arm branched PEG, -(CH2)3NHCO(CH2)2-MAL, Mw 20,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-{[3-(3-maleimido-1-oxopropyl)amino]propyloxy} propane

CAS#: 697278-30-1
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-400MA

2arm branched PEG, -(CH2)3NHCO(CH2)2-MAL, Mw 40,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-{[3-(3-maleimido-1-oxopropyl)amino]propyloxy} propane

CAS#: 697278-30-1
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-600MA

2arm branched PEG, -(CH2)3NHCO(CH2)2-MAL, Mw 60,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-{[3-(3-maleimido-1-oxopropyl)amino]propyloxy} propane
CAS#: 697278-30-1
Packaging size: 0.1g / 1g / 10g

SUNBRIGHT® GL2-800MA

2arm branched PEG, -(CH2)3NHCO(CH2)2-MAL, Mw 80,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-{[3-(3-maleimido-1-oxopropyl)amino]propyloxy} propane

CAS#: 697278-30-1
Packaging size: 0.1g / 1g / 10g

Maleimide PEG (C5 MA Type)

SUNBRIGHT® GL2-400MA3 *

2arm branched PEG, -(CH2)3NHCO(CH2)5-MAL, Mw 40,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-{[3-(6-maleimido-1-oxohexyl)amino]propyloxy} hexane

CAS#: 
Packaging size: 0.1g / 1g / 10g

Aminoxy PEG (CA Type)

SUNBRIGHT® GL2-200CA

2arm branched PEG, -CONH(CH2)2-ONH2, Mw 20,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(aminooxyethylcarbamyl) propane
Package size: 1g

SUNBRIGHT® GL2-400CA

2arm branched PEG, -CONH(CH2)2-ONH2, Mw 40,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(aminooxyethylcarbamyl) propane
Package size: 1g

SUNBRIGHT® GL2-600CA*

2arm branched PEG, -CONH(CH2)2-ONH2, Mw 60,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(aminooxyethylcarbamyl) propane
Package size: 1g

SUNBRIGHT® GL2-800CA*

2arm branched PEG, -CONH(CH2)2-ONH2, Mw 80,000
Chemical Name: 2,3-Bis(methylpolyoxyethylene-oxy)-1-(aminooxyethylcarbamyl) propane
Package size: 1g

Lysine Branched PEG (SUNBRIGHT® LY Series)

4-2-_lysine_branched_peg_sunbright_ly_series.png

Lysine Branched PEG has been already used in several marketed PEGylated-drugs such as PEGASYS®, MACUGEN® and CIMZIA® for 10 years.

Lysine Branched PEG (SUNBRIGHT® LY Series)

NHS PEG

SUNBRIGHT® LY-400NS

2arm Lysine branched PEG, -O-NHS, Mw 40,000
Chemical Name: 1-(N-succinimidyloxy)-oxo-2,6-bis(methylpolyoxyethylene-oxy-carbonylamino) hexane
CAS#: 159540-80-4

Packaging size: 0.1g / 1g / 10g

Aldehyde PEG

SUNBRIGHT® LY-400AL3*

2arm Lysine branched PEG, -CONH(CH2)2-CHO, Mw 40,000
Chemical Name: 1-(3-oxopropylamino)-oxo- 2,6-bis(methylpolyoxyethylene-oxy-carbonylamino) hexane

CAS#: 
Packaging size: 0.1g / 1g / 10g

Maleimide PEG

SUNBRIGHT® LY-400MA*

2arm Lysine branched PEG, -(CH2)3NHCO(CH2)2-MAL, Mw 40,000
Chemical Name: 1-[1-(3-Maleimido-1-oxopropyl)-ethyl-2-amino]-oxo-2,6bis(methylpolyoxyethylene-oxy-carbonylamino) hexane
CAS#: 322725-90-6

Packaging size: 0.1g / 1g / 10g

Other Branched PEG

3-arm Branched PEG (SUNBRIGHT® GL3 Series)

3-arm activated branched PEGs, to which another PEG spacer is introduced to 2-arm activated branched PEGs, show a higher reactivity with pharmaceutical substances.

4-arm Branched PEG (SUNBRIGHT® GL4 Series)

4-arm activated branched PEGs can reduce the viscosity of the relevant aqueous solutions, by introducing a larger number of branching points even without altering the molecular weight.

PEG-Solution Viscosity

CompoundStructureViscosity (mPa • s)
MeO-PEG (40kDa)Linear19.3
GL2 (40kDa)2-arm18.8
GL4 (40kDa)4-arm10.9

as aqueous solution at 10 wt%, at 40℃