Biotin and derivatives
Chem-Impex International, Inc. Biotin-N-hydroxysuccinimide | 35013-72-0 | MFCD00078531 | 5G
Biotin-N-hydroxysuccinimide, 35013-72-0, MFCD00078531, 5G
Medchemexpress LLC Bis-PEG9-NHS ester 5g | 1008402-79-6 | 708.71 | C30H48N2O17 | 5 G
Bis-PEG9-NHS ester is a homobifunctional PEG-based linker bearing two N-hydroxysuccinimide (NHS) ester reactive groups, used to conjugate primary amines on proteins, peptides, and small molecules for research applications.
- Homobifunctional PEG9 spacer with two NHS ester reactive groups.
- Facilitates amine-directed bioconjugation to proteins and peptides.
- Hydrophilic PEG spacer improves solubility in aqueous media.
- Suitable for PROTAC and ADC linker chemistry in research.
- High purity for reliable experimental performance.
Medchemexpress LLC Mal-PEG3-C1-NHS ester | 2230016-26-7 | 95.0% | 384.34 | C16H20N2O9 | 10 MG
Mal-PEG3-C1-NHS ester is a non-cleavable three-unit polyethylene glycol (PEG) linker bearing a maleimide and an N-hydroxysuccinimide (NHS) ester functional group, used to conjugate payloads to antibodies during antibody-drug conjugate synthesis. It is supplied as premeasured vials in DMSO to simplify dosing and handling in bioconjugation workflows.
- Non-cleavable three-unit PEG linker for bioconjugation.
- Maleimide reacts selectively with thiol groups; NHS ester reacts with primary amines.
- Supplied pre-dissolved in DMSO at 260.19 mM for convenient dosing.
- High purity suitable for research applications (95.0%).
- Colorless to light yellow solution stable at -20°C for up to 2 years when stored as directed.
Medchemexpress LLC Biotin-PEG6-NHS ester | 2055045-04-8 | 98.0% | C29H48N4O12S | 25 MG
Biotin-PEG6-NHS ester is a PEG-based PROTAC linker used in the synthesis of PROTACs. PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.
- PEG-based PROTAC linker
- Used in the synthesis of PROTACs
- Enables targeted protein degradation via the ubiquitin-proteasome system
- Connects ligands for E3 ubiquitin ligase and target proteins
Medchemexpress LLC BHQ-2 NHS | 916753-62-3 | 97.7% | 603.58 | 25 MG
BHQ-2 NHS is a dark quencher lacking native emission, attributed to its polyaromatic-azo backbone and a terminal NHS ester. It features a broad and intense quenching range from 560-670 nm, making it suitable as an acceptor in fluorescence resonance energy transfer (FRET) applications when used with orange to far-red emitting dyes. The NHS ester allows for labeling of primary amines (-NH2) found in proteins, amine-modified oligonucleotides, and other amine-containing molecules.
- Dark quencher with no native emission.
- Wide and intense quenching range (560-670 nm).
- Useful as an acceptor in FRET applications with orange to far-red emitting dyes.
- NHS ester allows labeling of primary amines in proteins, amine-modified oligonucleotides, and other amine-containing molecules.
Medchemexpress LLC Biotin-PEG11-amine | 1418022-42-0 | 99.9% | C34H66N4O13S | 100 MG
Biotin-PEG11-amine is a biotin-labeled, PEG-based PROTAC linker. It is designed for use in the synthesis of PROTACs. PROTACs are compounds that exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins by connecting a ligand for an E3 ubiquitin ligase and a ligand for the target protein.
- Biotin-labeled, PEG-based PROTAC linker
- Used in the synthesis of PROTACs
- PROTACs selectively degrade target proteins
- PROTACs utilize the ubiquitin-proteasome system
TARGETMOL CHEMICALS INC NSP-SA-NHS 5MG
Also available in 1 mg, 10 mg, 25 mg, 50 mg, 100 mg, 200 mg and bulk. Please contact Fisher for quotes. NSP-SA-NHS is a chemiluminescent acridinium ester that can be used for immunoassays. Purity 98.42%
Chem-Impex International, Inc. (+)-Biotinamidocaproyl hydrazide | MFCD00077659 | 50MG
(+)-Biotinamidocaproyl hydrazide, MFCD00077659, 50MG