Protein Modification Reagents
Medchemexpress LLC Cyclooct-4-en-1-yl (2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethyl)carbamate | 1800507-93-0 | 95.0% | C17H32N2O5 | 10MG
TCO-PEG3-amine is a trans-cyclooctene (TCO)-functionalized PEG3 linker terminating in a primary amine, designed for bioconjugation and linker assembly in targeted degrader and chemical biology workflows. It combines a hydrophilic PEG spacer with a fast-reacting TCO handle for bioorthogonal labeling and a free amine for conventional coupling chemistries.
- Provides a trans-cyclooctene handle for rapid bioorthogonal click reactions.
- Contains a PEG3 spacer to improve solubility and reduce steric hindrance.
- Features a terminal primary amine for amide bond formation and conjugation.
- Suitable for PROTAC linker assembly, bioconjugation, and labeling applications.
- Offered as a high-purity research reagent with defined molecular properties.
Medchemexpress LLC Endo-BCN-PEG4-PFP ester | 2904607-26-5 | 95.0% | C28H34F5NO8 | 10MG
endo-BCN-PEG4-PFP ester is a PEG-based bifunctional linker combining a strained alkyne (BCN) for strain-promoted alkyne-azide cycloaddition with a pentafluorophenyl (PFP) activated ester for efficient conjugation to primary amines. Supplied as an oil, it is designed for use in click chemistry, bioconjugation, and linker assembly in targeted degrader synthesis.
- Enables strain-promoted alkyne-azide cycloaddition (SPAAC) without copper.
- PFP ester reacts efficiently with primary amines to form stable amide bonds.
- PEG4 spacer improves solubility and reduces steric hindrance.
- Suitable for bioconjugation and targeted degrader linker construction workflows.
- Stable when stored frozen; follow recommended storage conditions for longevity.
Medchemexpress LLC Mal-PEG2-oxyamine TFA | 00-00-0 | MFCD00209801 | 96.5% | C12H17F3N2O7 | 10MG
Mal-PEG2-oxyamine TFA is a PEG-based bifunctional linker supplied as the trifluoroacetic acid (TFA) salt for use in PROTAC synthesis and other bioconjugation applications. It combines a maleimide reactive group with an oxyamine functional handle, and a short PEG2 spacer to enhance solubility and flexibility.
- Bifunctional linker enabling thiol and carbonyl conjugation.
- Maleimide permits rapid, thiol-selective coupling under mild conditions.
- Oxyamine enables chemoselective oxime ligation to aldehydes and ketones.
- PEG2 spacer increases aqueous solubility and reduces steric hindrance.
- Provided as TFA salt to improve stability and handling.
- High purity suitable for research and synthetic workflows.
Abcam Kinase Assay Buffer I, 5ML
Stock solution of buffer used for assaying kinase protein.
The product is subject to the following: Abcam Restricted Use Statement
BIOPHARMA PEG SCIENTIFIC INC m-PEG12-amine | 80506-64-5 | 559.7 g/mol | 5G
m-PEG12-amine | 80506-64-5 | 559.7 g/mol | 5G
