Highly Pure,
Monodispersed
Polyethylene Glycol
(PEG) Products
While most PEG products are a mixture of different
molecular weights, PurePEG supplies mono-disperse,
single molecular weight molecules. Through our innovative
PurePEG® technology, we have the ability
to manufacture high quality mono-disperse PEGs with
precise molecular weights in high purities.
Unlock Precision in Every Molecule
Our high-purity, monodisperse PEGs enable you more reliable experiments, cleaner data, and faster breakthroughs.
Whether you’re developing next-generation therapeutics or pushing the boundaries of materials science, PurePEG provides the molecular tools to transform your ideas into groundbreaking realities.

Featured Categories
Our Most Popular PEGs
NH2-PEG-DMG, 2K
CAS# N/A
MW# 2000
DSPE-PEG2K-CH2CH2COOH
CAS# N/A
MW# 2000
DSPE-PEG-NHS, 2K
CAS# N/A
MW# 2000
DSG-PEG-NH2, 2K
CAS# N/A
MW# 2000
endo-BCN-PEG4-Val-Cit-PAB-MMAE
CAS# 2762519-08-2
MW# 1546.95
Amino-PEG4-Val-Cit-PAB-MMAE
CAS# 1492056-71-9
MW# 1370.74
Azido-PEG4-Val-Cit-PAB-MMAE
CAS# 1869126-64-6
MW# 1396.74
DBCO-NH-PEG45-DSG
CAS# N/A
MW# 2893.71
Our Most Popular PEG Lipids
Propargyl-PEG6-NHS Ester
CAS# 2093153-99-0
MW# 489.52
5,15-bis(4-aminophenyl)-10,20-diphenylporphyrin-MnCl
CAS# N/A
MW# 733.15
5-(4-carboxyphenyl)-10,15,20-triphenyl porphyrin-MnCl
CAS# N/A
MW# 747.13
WELCOME TO PurePEG
PEGs have earned their place in the biomedical field due to their
water solubility, non-toxicity, and non-immunogenicity properties.
They are widely used in research for bioconjugation, assays, and
bioorthogonal labeling purposes. To date, there are 12 PEGylated
drugs approved by the FDA for treatment of a number of chronic
diseases, with more approvals pending. PurePEG developed the
first acid functionalized PEG used in an FDA approved antibody-
drug conjugate (ADC drug) used to treat breast cancer. PEG’s
impact on biological therapies cannot be understated. Despite a
wider market of suppliers and manufacturers of PEG, PurePEG still
stands at the forefront with our unparalleled quality of PEG and
our ever-expanding PEG research and development.
Supplying PEG reagents
with discrete molecular
weights, offering PEG
reagents with
up to min.99% purity
Pioneering Precision
in PEG Technology
Advancing Scientific Discovery
Through Molecular Innovation
PurePEG, a San Diego-based global leader in polyethylene glycol
(PEG) technology, produces high-quality, monodisperse PEGs
using its proprietary PurePEG™ technology. Committed to
excellence, PurePEG collaborates with institutions worldwide,
offering custom synthesis, technical support, and consultation to
advance scientific knowledge and develop life-changing therapies.

Got Questions?
Get Answers Now!
Our PEG experts are standing by to solve your doubts instantly. No waiting, no complications – just rapid, reliable answers to keep your research moving forward.
From complex custom synthesis queries to product selection guidance, we’re here to help – in real-time.

Got Questions?
Get Answers Now!
Our PEG experts are standing by to solve your doubts instantly. No waiting, no complications – just rapid, reliable answers to keep your research moving forward.
From complex custom synthesis queries to product selection guidance, we’re here to help – in real-time.
Latest News
Polyethylene glycol (PEG) linkers comprising 44 ethylene oxide units (PEG44) provide a defined, extended spacer length for bioconjugation, drug delivery,
Heterobifunctional PEG44 linkers, also recognized broadly among various PEG44 linker types, are specialized monodisperse polyethylene glycol derivatives featuring two distinct
Disulfide-containing PEG44 linkers are specialized chemical reagents utilized in the construction of stimuli-responsive bioconjugates and advanced drug delivery systems. Featuring














































