Biotin and derivatives
Medchemexpress LLC Amine-PEG3-Biotin | 359860-27-8 | 99.8% | 418.55 | 10 MG
Amine-PEG3-Biotin is a signal amplification label that contains a biotin group and a terminal primary amine group. It is for research use only.
- Signal amplification label
- Contains a biotin group
- Contains a terminal primary amine group
- For research use only
Medchemexpress LLC 3aS 4S 6aR -Biotin- 100mg
(3aS 4S 6aR)-Biotin-PEG4-Alkyne is an alkyne-activated biotinylation reagent (3aS 4S 6aR)-Biotin-PEG4-Alkyne can be reacted with azides via a copper-catalyzed click reaction Biotin-labeled biomolecules can be bound to avidin or streptavidin for further purification and detection[1]
Apexbio Technology LLC NHS-SS-11-Biotin(Synonyms: Sulfo-NHS-SS-Biotin, EZ-Link NHS-SS-Biotin, NHS-SS-D-Biotin, N-Hydroxysuccinimidyl-SS-Biotin), 5mg, CAS: 142439-92-7.
NHS-SS-11-Biotin (CAS 142439-92-7) is an amine-reactive biotinylation reagent commonly used in biochemical research Structurally it possesses an N-hydroxysuccinimide (NHS) ester group that covalently reacts with primary amines of target proteins or biomolecules forming stable amide bonds and releasing sulfo-NHS This reagent features a cleavable disulfide linker and an extended spacer arm of approximately 24 3 enhancing probe accessibility to avidin or streptavidin conjugates It is utilized extensively for reversible biotinylation affinity purification or labeling studies in proteomics and cell biology applications
Medchemexpress LLC CCND3 protein, human (biotinylated, MBP, His, Flag) | >85.0% | 20UG
Recombinant human CCND3 protein, biotinylated and fused to an N-terminal MBP with His and Flag tags, expressed in E. coli. The construct corresponds to CCND3 residues M1-L292 and is supplied in small research quantities (example: 20 μg). Characterization by reducing SDS-PAGE shows an apparent molecular weight of ~80 kDa and purity greater than 85%; consult the Certificate of Analysis for lot-specific data and storage instructions.
- Biotinylated for affinity capture and detection.
- N-terminal MBP fusion improves solubility.
- His and Flag tags enable purification and detection.
- Includes CCND3 residues M1-L292 for target-specific studies.
- Characterized by SDS-PAGE with >85% purity.
- Provided in small research-use quantities suitable for assay development.
Medchemexpress LLC GSPT1 protein, human (biotinylated, Avi tag) | 92.0% | 10UG
Recombinant human GSPT1 protein is expressed in Sf9 insect cells and site-specifically biotinylated via an Avi tag. Supplied as a 0.22 μm filtered solution in 50 mM HEPES, pH 7.5, with 1 mM DTT, 200 mM NaCl, and 20% glycerol, the product is provided frozen and shipped on dry ice for storage at -80°C.
- Human-derived sequence spanning residues D2-D637; approx. 70.8 kDa.
- Site-specific Avi biotinylation for consistent streptavidin-based applications.
- High purity (92.0% by reducing SDS-PAGE) suitable for biochemical assays.
- Formulated with glycerol and reducing agent for enhanced stability.
- Available in small-scale sizes to support assay development and screening.
- Shipped on dry ice; recommended long-term storage at -80°C.
Medchemexpress LLC N-Mal-N-bis(PEG2-NHS ester) | 2182601-73-4 | 98.9% | C29H38N4O15 | 100 MG
N-Mal-N-bis(PEG2-NHS ester) is a PEG-based PROTAC linker used in the synthesis of PROTACs. PROTACs are compounds containing two different ligands connected by a linker: one for an E3 ubiquitin ligase and the other for a target protein. They function by exploiting the intracellular ubiquitin-proteasome system to selectively degrade target proteins.
- PEG-based PROTAC linker
- Used in the synthesis of PROTACs
- Exploits the ubiquitin-proteasome system
- Selectively degrades target proteins
- For research use only
Medchemexpress LLC M-PEG-NHS ester (MW 10000) | 92451-01-9 | 98.0% | Poly(oxy-1,2-ethanediyl), α-[2-[(2,5-dioxo-1-pyrrolidinyl)oxy]-2-oxoethyl]-ω-methoxy- | 50 MG
M-PEG-NHS ester (MW 10000) is a PEG-based PROTAC linker. It can be used in the synthesis of PROTACs.
- PEG-based PROTAC linker
- Can be used in the synthesis of PROTACs
Medchemexpress LLC Bis-PEG25-NHS ester | 2221948-96-3 | 99.8% | 1413.55 | C62H112N2O33 | 100 MG
Bis-PEG25-NHS ester is a bifunctional PEG-based linker bearing two N-hydroxysuccinimide (NHS) ester groups for efficient amine conjugation. It is used as a cleavable linker in antibody-drug conjugate (ADC) synthesis and as a spacer in PROTAC construction; the PEG25 spacer improves aqueous solubility. Intended for research use only.
- Contains two NHS ester groups for amine coupling.
- PEG25 spacer enhances solubility in aqueous media.
- Suitable for ADC linker and PROTAC synthesis.
- High purity (99.75%) for reproducible conjugation.
- Store sealed, away from moisture; in solvent: -80°C (6 months), -20°C (1 month).
