Protein Modification Reagents
Medchemexpress LLC 4-Arm PEG-Azide MW 50mg
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]
Medchemexpress LLC Mal-amido-PEG4-NHS ester | 756525-99-2 | MFCD11041113 | 99.2% | 513.50 | C22H31N3O11 | 1 G
Mal-amido-PEG4-NHS ester is a PEG-based bifunctional linker bearing a maleimide and an N-hydroxysuccinimide (NHS) ester. It is designed for bioconjugation and PROTAC synthesis to connect thiol- and amine-containing ligands while providing a flexible, hydrophilic spacer that can improve solubility and linker reach.
- Bifunctional: maleimide for thiol coupling and NHS ester for amine coupling.
- PEG4 spacer increases hydrophilicity and solubility in aqueous media.
- High purity suitable for research and synthetic applications.
- Available in multiple pack sizes to support small- and large-scale work.
- Soluble in DMSO at high concentrations; ultrasonic treatment may aid dissolution.
- Store frozen for long-term stability; follow solvent storage guidance for solutions.
Cayman Chemical Boc-NH-PEG3-CH2CoH 250mg
A building block; has been used as a linker in the synthesis of PROTACs targeting MEK; has been used as a spacer in the synthesis of radiolabeled probes for dual labeling of tumor integrin αVβ3 and GRPR in tumor tissue in vivo
![eMolecules Broadpharm / 14-(Azide-PEG5-ethylcarbamoyl)tridecanoic t-butyl ester / 100mg / 784454986 / BP-29796 / 95.000 / / [null] / 602.814 / C30H58N4O8](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502473327.JPG-250.jpg)
eMolecules Broadpharm / 14-(Azide-PEG5-ethylcarbamoyl)tridecanoic t-butyl ester / 100mg / 784454986 / BP-29796 / 95.000 / / [null] / 602.814 / C30H58N4O8
Broadpharm / 14-(Azide-PEG5-ethylcarbamoyl)tridecanoic t-butyl ester / 100mg / 784454986 / BP-29796 / 95.000 / / [null] / 602.814 / C30H58N4O8
AARON CHEMICALS LLC 2,5,8,11,14,17,20,23-OCTAOXAHEXACOSAN-26-OIC ACID | 1093647-41-6 | 412.5 g/mol | 250MG
2,5,8,11,14,17,20,23-OCTAOXAHEXACOSAN-26-OIC ACID | 1093647-41-6 | 412.5 g/mol | 250MG
Chemscene ChemScene | N-Boc-PEG1-bromide | 250MG | CS-0108407 | 0.97 | 164332-88-1| MFCD24167474 | 268.15
ChemScene | N-Boc-PEG1-bromide | 250MG | CS-0108407 | 0.97 | 164332-88-1| MFCD24167474 | 268.15
Medchemexpress LLC (S,R,S)-AHPC-PEG4-NH2 hydrochloride | 2064292-52-8 | 98.2% | 700.29 g/mol | C32H50ClN5O8S | 25 MG
(S,R,S)-AHPC-PEG4-NH2 hydrochloride is an E3 ligase ligand-linker conjugate that combines an (S,R,S)-AHPC-based VHL ligand with a four-unit polyethylene glycol (PEG4) linker terminated in a primary amine; provided as the hydrochloride salt and supplied as a solid for research use.
- Used as an E3 ligase recruiting module in PROTAC design.
- PEG4 linker provides a flexible, water-soluble spacer for linker optimization.
- Terminal amine enables straightforward conjugation to target-binding ligands.
- High purity (~98.2%) solid suitable for synthetic and analytical workflows.
- Chemical formula and structure information provided for synthesis planning and cheminformatics.
Broadpharm DBCO-PEG12-NHS ester| 100MG| CAS# 2093934-94-0|
DBCO-PEG12-NHS ester| 100MG| CAS# 2093934-94-0|
AdipoGen Guanidine thiocyanate
Chemical. CAS 593-84-0. Formula CH5N3 . CHNS. MW 59.07 . 59.09. Guanidine thiocyanate is a powerful, chaotropic agent which is widely used for purification of proteins and nucleic acids. Guanidine thiocyanate is preferred for the purification of RNA because it dissociates the RNA into its nucleic acids and protein forms and is commonly used in the guanidinium thiocyanate-phenol-chloroform extraction method. As one of the strongest protein denaturants, it inactivates nucleases more than twice as fast as Guanidine hydrochloride. It is useful for denaturation and refolding of proteins. At high molarity solutions, Guanidine thiocyanate irreversibly inactivates RNase. Guanidine thiocyanate causes proteins to dissolve readily, thus disintegrating cellular structures.
Grainger Closed End Peg Rack 19.88 L Blue PK6
The Carlisle Closed End Peg Rack is a 19-7/8" long metal peg rack with closed ends. It has 20 evenly spaced pegs that are 1/2" in diameter and protrude 1-1/4" from the rack. The rack is made from steel with a durable powder coat finish and can hold up to 50 lbs per linear foot. This versatile rack can be used for retail displays, workshops, garages, basements, and more to hang tools, hardware, accessories, apparel and other items with holes or hooks. It comes with mounting hardware for easy installation on walls or pegboards. The closed ends prevent items from sliding off the ends of the rack.