Protein Modification Reagents
Kyfora Bio Polyethylene glycol MW 600
Polyethylene glycol (PEG) is a water-soluble biologically inert polymer that has a number of biological and pharmaceutical applications Specifically PEG600 can be used as an excipient in pharmaceutical products or as a coating on nanoparticles to prevent opsonization in vivo It can also be used for purification of plasmid DNA The polymer chains are hydroxyl terminated at both ends
eMolecules 2055042-59-4 | N-(Amino-PEG3)-N-bis(PEG3-acid) HCl salt | Broadpharm | MFCD30182040 | 600.703 | C26H52N2O13 | 97.000 | NCCOCCOCCOCCN(CCOCCOCCOCCC(O)=O)CCOCCOCCOCCC(O)=O | 500mg | 309208956
N-(Amino-PEG3)-N-bis(PEG3-acid) HCl salt | Broadpharm | 2055042-59-4 | MFCD30182040 | 600.703 | C26H52N2O13 | 97.000 | NCCOCCOCCOCCN(CCOCCOCCOCCC(O)=O)CCOCCOCCOCCC(O)=O | 500mg | 309208956
Medchemexpress LLC Cy5.5-PEG-biotin | 10 MG
Cy5.5-PEG-Biotin (MW 2000) is a polyethylene glycol derivative conjugated with the Cy5.5 near-infrared fluorophore and a biotin moiety. It is used as a fluorescent labeling and capture reagent for research applications, where biotin enables strong binding to streptavidin/avidin and Cy5.5 provides NIR detection.
- Cy5.5 fluorophore for near-infrared imaging and detection.
- PEG spacer (average MW 2000) enhances solubility and reduces steric hindrance.
- Biotin functional group enables high-affinity capture by streptavidin/avidin.
- Suitable for labeling proteins, nucleic acids, and surfaces in detection workflows.
- Supplied as a research reagent, intended for laboratory use.
eMolecules 811442-84-9 | t-Boc-N-amido-PEG4-amine | Broadpharm | MFCD16619339 | 336.429 | C15H32N2O6 | 98.000 | CC(C)(C)OC(=O)NCCOCCOCCOCCOCCN | 500mg | 272383834
t-Boc-N-amido-PEG4-amine | Broadpharm | 811442-84-9 | MFCD16619339 | 336.429 | C15H32N2O6 | 98.000 | CC(C)(C)OC(=O)NCCOCCOCCOCCOCCN | 500mg | 272383834
eMolecules Mal-amido-PEG12-TFP ester | 1431295-77-0 | MFCD28505513 | 1g
Broadpharm | Mal-amido-PEG12-TFP ester | 1g | 550804214 | BP-22742 | 95.000 | 1431295-77-0 | MFCD28505513 | 916.911 | C40H60F4N2O17
If you are unable to find the chemical you are looking for, make sure you are logged into your fishersci.com account and click on the following link:
eMolecules Building Block Tool
eMolecules 196936-04-6 | Amino-PEG36-acid | Broadpharm | MFCD21363230 | 1675.002 | C75H151NO38 | 95.000 | NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCC(O)=O | 1g | 296213679
Amino-PEG36-acid | Broadpharm | 196936-04-6 | MFCD21363230 | 1675.002 | C75H151NO38 | 95.000 | NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCC(O)=O | 1g | 296213679
Medchemexpress LLC 4-Arm PEG-Azide MW 5mg
4-Arm PEG-Azide (MW 40000) (4-Arm PEG-N3 (MW 40000)) is a multi-arm PEG derivative with an azide group at each end of four arms attached to a pentaerythritol core[1]
eMolecules 1802908-02-6 | Methyltetrazine-PEG3-maleimide | Broadpharm514.539 | C24H30N6O7 | 95.000 | Cc1nnc(nn1)-c1ccc(OCCOCCOCCOCCNC(=O)CCN2C(=O)C=CC2=O)cc1 | 100mg | 268505128
Methyltetrazine-PEG3-maleimide | Broadpharm | 1802908-02-6514.539 | C24H30N6O7 | 95.000 | Cc1nnc(nn1)-c1ccc(OCCOCCOCCOCCNC(=O)CCN2C(=O)C=CC2=O)cc1 | 100mg | 268505128
Medchemexpress LLC 3,6,9,12-tetraoxatridecan-1-amine | 85030-56-4 | MFCD11041099 | 98.8% | 207.27 | C9H21NO4 | 250 MG
m-PEG4-Amine is a polyethylene glycol (PEG) based bifunctional linker bearing a terminal primary amine. It is used as a short, flexible spacer in the synthesis of PROTACs and as a cleavable linker for antibody-drug conjugates, facilitating amine-based conjugation reactions.
- Provides a PEG4 spacer (~4 ethylene glycol units)
- Terminal primary amine for amide or carbamate conjugation
- High purity (98.8%) suitable for research use
- Molecular weight 207.27 g/mol
- Typically supplied as a solid; common pack size 250 MG
eMolecules 2173095-09-3 | m-PEG3-S-PEG2-OH | Broadpharm | MFCD29918260 | 312.420 | C13H28O6S | 98.000 | COCCOCCOCCSCCOCCOCCO | 500mg | 303671192
m-PEG3-S-PEG2-OH | Broadpharm | 2173095-09-3 | MFCD29918260 | 312.420 | C13H28O6S | 98.000 | COCCOCCOCCSCCOCCOCCO | 500mg | 303671192
Mitegen PEG 6000, 50%(w/v), 250 ml, CAS# 25322-68-3
Use our stock solutions directly or as a component in solutions you create in your own lab. We prepare our stock solutions using high quality raw materials, ASTM Type 1 water, and sterile packaging. Our stock solutions are intended for Research and Development Use Only.
Medchemexpress LLC 4,7,10,13,16,19-hexaoxaheneicosanoic acid, 2,5-dioxo-1-pyrrolidinyl ester | 1599472-25-9 | MFCD20926374 | 98.0% | 530.52 | C23H34N2O12 | 100 MG
Mal-PEG6-NHS ester is a non-cleavable antibody-drug conjugate (ADC) linker composed of a maleimide group, a six-unit polyethylene glycol (PEG6) spacer, and an N-hydroxysuccinimide (NHS) ester that enables thiol and amine bioconjugation.
- Non-cleavable ADC linker suitable for antibody conjugation.
- Contains maleimide and NHS ester reactive groups.
- PEG6 spacer increases hydrophilicity and solubility.
- Purity 98.0% (NMR) and molecular weight ~530.52 g/mol.
- Soluble in DMSO at 100 mg/mL; may require sonication.
- Store at -20 °C and protect from light; stock solutions: -80 °C (6 months), -20 °C (1 month).
- CAS number 1599472-25-9.