Laysan is pronounced, "LI-"sän" and it is an albatross that is found in the islands of the Pacific Ocean. It is a large, rare bird that is known to be graceful and impressive in flight.

Our Mission
We are dedicated to building a long term relationship with our customers by offering quality PEG reagents backed up with exceptional customer service and technical support.

Ester Reagents (NHS, SAS, SC, SCM, SG, SS, SVA)

*Laysan Bio recommends the SVA reagent in place of any SCM reagents. Please click here to read more about the benefits of the SVA over the SCM.

Click here for more information on the hydrolysis half-life rates for our Ester reagents.

Don't know which reagent or molecular weight to use? Try one of our kits!

CATALOG REAGENTS

Monofunctional
mPEG2-NHS, MW 40,000

mPEG-Succinimidyl Amido Succinate (SAS), MW 2,000
mPEG-Succinimidyl Amido Succinate (SAS), MW 5,000***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

mPEG-Succinimidyl Carbonate (SC), MW 2,000
mPEG-Succinimidyl Carbonate (SC), MW 5,000
mPEG-Succinimidyl Carbonate (SC), MW 10,000
mPEG-Succinimidyl Carbonate (SC), MW 20,000***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

mPEG-Succinimidyl Glutarate (SG), MW 5,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

mPEG-Succinimidyl Succinate (SS), MW 5,000***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

mPEG-Succinimidyl Valerate (SVA), MW 2,000
mPEG-Succinimidyl Valerate (SVA), MW 5,000
mPEG-Succinimidyl Valerate (SVA), MW 10,000
mPEG-Succinimidyl Valerate (SVA), MW 20,000

Bifunctional
SAS-PEG-SAS, MW 3,400

SG-PEG-SG, MW 5,000***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

SS-PEG-SS, MW 3,400

SVA-PEG-SVA, MW 3,400
SVA-PEG-SVA, MW 5,000

Heterobifunctional
Acrylate-PEG-SVA, MW 2,000
Acrylate-PEG-SVA, MW 3,400
Acrylate-PEG-SVA, MW 5,000

Butyraldehyde-PEG-SVA, MW 3,400***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

Biotin-PEG-SC, MW 5,000***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

Biotin-PEG-SVA, MW 3,400
Biotin-PEG-SVA, MW 5,000

tBOC-NH-PEG-SC, MW 3,400 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

tBOC-NH-PEG-SVA, MW 3,400

FMOC-NH-PEG-SC, MW 2,000

FMOC-NH-PEG-SVA, MW 3,400

Maleimide-PEG-SVA, MW 3,400
Maleimide-PEG-SVA, MW 5,000

Orthopyridyl disulfide (OPSS)-PEG-SVA, MW 5,000

SC-PEG-Carboxymethyl, MW 3,400
SC-PEG-Carboxymethyl, MW 5,000

Multi-arm
4 arm PEG-SAS, MW 10,000

4 arm PEG-SC, MW 10,000

4 arm PEG-SG, MW 10,000
4 arm PEG-SG, MW 20,000

4 arm PEG-SS, MW 10,000

Kits
Amine Reactive Kit, MW 5,000
(mPEG-NPC, mPEG-SVA, mPEG-bALD, mPEG-SS, mPEG-SC)

Biotin-PEG-SVA, MW 5,000 and MPEG-SVA, MW 5,000 Kit

mPEG-Succinimidyl Amido Succinate Kit (SAS)
4 molecular weights (2K, 5K, 10K, 20K)

mPEG-Succinimidyl Carbonate Kit (mPEG-SC)
4 molecular weights (2K, 5K, 10K, 20K)

mPEG-Succinimidyl Succinate Kit (mPEG-SS)
4 molecular weights (2K, 5K, 10K, 20K)

mPEG-Succinimidyl Valerate Kit (mPEG-SVA)
5 molecular weights in kit (2K, 5K, 10K, 20K, 30K)

CUSTOM REAGENTS

Monofunctional

mPEG-Succinimidyl Amido Succinate (SAS), MW 10,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.
mPEG-Succinimidyl Amido Succinate (SAS), MW 20,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

mPEG-Succinimidyl Carbonate (SC), MW 1,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.
mPEG-Succinimidyl Carbonate (SC), MW 30,000

mPEG-Succinimidyl Glutarate (SG), MW 2,000
mPEG-Succinimidyl Glutarate (SG), MW 10,000
mPEG-Succinimidyl Glutarate (SG), MW 20,000
mPEG-Succinimidyl Glutarate (SG), MW 30,000

mPEG-Succinimidyl Propionate (SPA), MW 550
mPEG-Succinimidyl Propionate (SPA), MW 1,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

mPEG-Succinimidyl Valerate (SVA), MW 30,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

mPEG-Succinimidyl Succinate (SS), MW 550
mPEG-Succinimidyl Succinate (SS), MW 1,000
mPEG-Succinimidyl Succinate (SS), MW 2,000
mPEG-Succinimidyl Succinate (SS), MW 10,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.
mPEG-Succinimidyl Succinate (SS), MW 20,000

Bifunctional
SAS-PEG-SAS, MW 2,000***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.
SAS-PEG-SAS, MW 10,000
SAS-PEG-SAS, MW 20,000

SG-PEG-SG, MW 10,000

SS-PEG-SS, MW 2,000
SS-PEG-SS, MW 10,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

SVA-PEG-SVA, MW 1,000

Heterobifunctional

Acrylate-PEG-SCM, MW 1,000
Acrylate-PEG-SCM, MW 3,400
Acrylate-PEG-SCM, MW 5,000
Acrylate-PEG-SCM, MW 20,000

Acrylate-PEG-SVA, MW 8,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

Biotin-PEG-SC, MW 2,000
Biotin-PEG-SC, MW 3,400

Biotin-PEG-SVA, MW 10,000
Biotin-PEG-SVA, MW 20,000

Butyraldehyde-PEG-SVA, MW 2,000
Butyraldehyde-PEG-SVA, MW 5,000***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.
Butyraldehyde-PEG-SVA, MW 10,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

Carboxymethyl-PEG-SCM, MW 35,000

FMOC-NH-PEG-SVA, MW 5,000

Maleimide-PEG-SVA, MW 2,000***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.
Maleimide-PEG-SVA, MW 10,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.
Maleimide-PEG-SVA, MW 20,000

Orthopyridyl disulfide (OPSS)-PEG-SVA, MW 2,000
Orthopyridyl disulfide (OPSS)-PEG-SVA, MW 3,400
OPSS-PEG-Succinimidyl Valerate (SVA), MW 10,000
OPSS-PEG-Succinimidyl Valerate (SVA), MW 20,000

SC-PEG-Carboxymethyl, MW 2,000

tBOC-NH-PEG-Succinimidyl Carbonate (SC), MW 2,000
tBOC-NH-PEG-Succinimidyl Carbonate (SC), MW 5,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

tBOC-NH-PEG-Succinimidyl Valerate (SVA), MW 2,000
tBOC-NH-PEG-Succinimidyl Valerate (SVA), MW 5,000***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

Multi-arm
4 arm PEG-SAS, MW 20,000 ***MONTHLY SALE ITEM. SEE PRODUCTS FRONT PAGE FOR DISCOUNT CODE.

4 arm PEG-SC, MW 20,000