Protein Modification Reagents
CEM Corporation Rink Amide ProTide Resin (LL), 5 g
ProTide resins contain an ideal PEG and polystyrene core leading to an optimized SPPS environment. Unmatched performance for routine synthesis of long (> 30 amino acids) or difficult peptide amides. Can be used in place of PAL or other Rink Amide resins.
New England Biolabs, Inc. Endo D – 1500 units
Endo D is a recombinant glycosidase, which cleaves within the chitobiose core of paucimannose N-linked glycans, with or without extensions in the antennae. Endo D is tagged with a chitin binding domain (CBD) for easy removal from a reaction, and is supplied glycerol-free for optimal performance in HPLC and MS- intensive methods.
Medchemexpress LLC Dopamine-PEG-N3 MW 10mg
Dopamine-PEG-N3 (MW 2000) (Dopamine-PEG-Azide (MW 2000)) is a compound composed of dopamine PEG segments and an azide group (-N3) Dopamine-PEG-N3 (MW 2000) can be used as a crosslinker to connect different materials together to build new composite materials and improve the performance of materials Dopamine-PEG-N3 (MW 2000) is a click chemistry reagent It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing an alkyne group
Medchemexpress LLC Dopamine-PEG-N3 MW 50mg
Dopamine-PEG-N3 (MW 2000) (Dopamine-PEG-Azide (MW 2000)) is a compound composed of dopamine PEG segments and an azide group (-N3) Dopamine-PEG-N3 (MW 2000) can be used as a crosslinker to connect different materials together to build new composite materials and improve the performance of materials Dopamine-PEG-N3 (MW 2000) is a click chemistry reagent It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing an alkyne group
Medchemexpress LLC Dopamine-PEG-N3 MW 100mg
Dopamine-PEG-N3 (MW 2000) (Dopamine-PEG-Azide (MW 2000)) is a compound composed of dopamine PEG segments and an azide group (-N3) Dopamine-PEG-N3 (MW 2000) can be used as a crosslinker to connect different materials together to build new composite materials and improve the performance of materials Dopamine-PEG-N3 (MW 2000) is a click chemistry reagent It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing an alkyne group
Medchemexpress LLC Dopamine-PEG-N3 MW 25mg
Dopamine-PEG-N3 (MW 2000) (Dopamine-PEG-Azide (MW 2000)) is a compound composed of dopamine PEG segments and an azide group (-N3) Dopamine-PEG-N3 (MW 2000) can be used as a crosslinker to connect different materials together to build new composite materials and improve the performance of materials Dopamine-PEG-N3 (MW 2000) is a click chemistry reagent It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing an alkyne group
Medchemexpress LLC HS-PEG5-CH2CH2NH2 hydrochloride | 1446256-16-1 | 98.0% | C12H28ClNO5S | 10MG
HS-PEG5-CH2CH2NH2 hydrochloride is a thiol-terminated PEG5 linker supplied as the hydrochloride salt, intended for synthesis of PROTACs and other bioconjugates. It provides a short, flexible spacer with terminal thiol and amine groups for versatile conjugation chemistries.
- Thiol-terminated PEG5 linker for conjugation chemistries.
- Terminal ethyleneamine available as hydrochloride salt.
- Short, flexible spacer suitable for PROTAC design.
- High purity (98.0%) for consistent synthetic performance.
- Compatible with common bioconjugation reactions.
Medchemexpress LLC 3,6,9,12-tetraoxapentadec-14-yn-1-ol, 1-(4-methylbenzenesulfonate) | 875770-32-4 | 99.3% | 386.46 | C18H26O7S | 1 G
Propargyl-PEG4-Tos is a PEG-based linker bearing a propargyl (alkyne) terminus and a tosylate leaving group used in synthesis workflows for PROTACs, ADCs, and click-chemistry conjugation.
- Enables copper-catalyzed azide-alkyne cycloaddition for bioconjugation.
- Suitable as a cleavable linker for antibody-drug conjugate synthesis.
- Applicable for PROTAC linker assembly and modular synthesis.
- High reported purity (99.25%), supporting reliable synthetic performance.
- Molecular weight 386.46 and formula C18H26O7S.
Medchemexpress LLC m-PEG-DMG | 1019000-64-6 | ≥98.0% | 2000 Da (average) | (C2H4O)nC36H73NO5 | 5 MG
m-PEG-DMG (MW 2000) is a methoxy-terminated polyethylene glycol lipid with a dimyristoyl glycerol anchor and an average molecular weight of 2,000 Da. It is intended for incorporation into liposomes and lipid nanoparticles to provide a PEG corona that enhances stability and circulation time in drug delivery research.
- Enhances colloidal stability and circulation time
- Reduces protein adsorption and opsonization
- Facilitates PEGylation of liposome and nanoparticle surfaces
- Supplied in lab-scale quantities suitable for formulation studies
- High purity for reproducible formulation performance
Medchemexpress LLC Mal-PEG2-NHS | 329364-72-9 | MFCD34471337 | 95.0% | C14H16N2O8 | 10MG
Mal-PEG2-NHS is a PEG-based bifunctional linker bearing a maleimide and an N-hydroxysuccinimide (NHS) ester. It enables site-selective conjugation by reacting the maleimide with thiols and the NHS ester with primary amines, facilitating assembly of bifunctional molecules such as PROTACs and other bioconjugates.
- Contains maleimide and NHS ester functional groups.
- Provides a two-unit PEG spacer for flexibility and solubility.
- Enables thiol- and amine-directed conjugation chemistries.
- Suitable for PROTAC synthesis and general bioconjugation applications.
- High purity (~95%) for reliable synthetic performance.
Medchemexpress LLC Mal-amido-(CH2COOH)2 | 207613-14-7 | 99.2% | 284.22 g/mol | C11H12N2O7 | 5 MG
Mal-amido-(CH2COOH)2 is a maleimidoethyl-containing intermediate used in the synthesis of hydrophilic antibody-drug conjugate (ADC) linkers. It is provided as a research-use building block for linker chemistry.
- Maleimidoethyl intermediate for ADC linker synthesis.
- High reported purity supports consistent chemical performance.
- Moderate molecular weight and polar functionality aid solubility in common organic solvents.
- Reactive maleimide moiety enables conjugation to thiol-containing biomolecules.
- Available in small research-scale quantities suitable for route development and linker optimization.
Formumax Scientific Inc DOXOVES- PEGYLATED LIPOSOMAL
Doxoves® - PEGylated Liposomal Doxorubicin HCl (2.0mL, 2.0mg/mL)Doxorubicin HCl is loaded into PEGylated liposomes composed of HSPC/CHOL/mPEG2000-DSPE (56.2:38.5:5.3 mol/mol) with ammonium gradient by the active loading approach. It is comparable to the commercial product DOXIL®. The liposomes are prepared to very high quality with consistent lot-lot characteristics. Narrow particle size distribution and high drug encapsulation efficiency. Note the high drug concentration (4mg/mL compared to 2 mg/mL for DOXIL®) allows the researchers to perform experiments at higher concentration/doses.Plain control liposomes for this product: F30204B-C2-2 (please inquire)Product For Research only and NOT for Human Use
Medchemexpress LLC Mal-PEG4-propargyl | 1262681-30-0 | MFCD29041878 | 99.7% | C15H21NO6 | 10MG
Mal-PEG4-propargyl is a bifunctional PEG4 linker bearing a maleimide and a propargyl (alkyne) group. It is designed for use in bioconjugation and linker assembly, enabling thiol-maleimide coupling and copper-catalyzed azide-alkyne cycloaddition (CuAAC) to attach diverse ligands or linkers.
- Maleimide group enables rapid, selective thiol conjugation.
- Propargyl (alkyne) group supports CuAAC "click" reactions.
- PEG4 spacer improves solubility and reduces steric hindrance.
- Low molecular weight (311.33 g·mol⁻¹) for minimal steric impact.
- High supplied purity (99.7%) for reliable synthetic performance.
Medchemexpress LLC DSPE-PEG5000 maleimide ammonium salt | 474922-22-0 | 98.4% | (C2H4O)nC51H92N1O13P.H3N | 10MG
DSPE-PEG5000-Mal is a lipid-polyethylene glycol conjugate bearing a terminal maleimide group for selective thiol coupling. It integrates into lipid bilayers to functionalize liposomes and lipid nanoparticles, while the PEG5000 chain provides steric stabilization and extended circulation in biological media.
- Maleimide-functional group enables selective thiol conjugation.
- PEG5000 chain provides steric stabilization and prolongs circulation time.
- Phospholipid anchor integrates into lipid bilayers and nanocarriers.
- High reported purity supports reproducible formulation performance.
- White to off-white solid suitable for analytical handling and storage.
Immunology Consultants anti-Hamster (CHO) Matrix metalloproteinase-19 Antibody - Affinity Purified
This affinity‑purified antibody targets hamster (CHO) Matrix Metalloproteinase‑19 (MMP‑19), an extracellular protease associated with matrix remodeling, cell migration, and tissue‑level structural regulation. Designed for sensitive detection of CHO‑derived MMP‑19, it supports applications in host cell protein profiling, bioprocess impurity monitoring, and characterization of recombinant protein production systems. The chicken‑derived format minimizes interference from mammalian proteins, delivering clean, reliable performance in ELISA, Western blotting, and orthogonal analytical methods. Its high specificity and consistent purification make it a valuable tool for laboratories requiring dependable detection of low‑abundance CHO process‑related proteins.