Biotin and derivatives
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]
Medchemexpress LLC Bis-PEG6-NHS ester | 1526718-98-8 | 576.55 g/mol | C24H36N2O14 | 1 G
Bis-PEG6-NHS ester is a PEG-based bifunctional linker containing two N-hydroxysuccinimide (NHS) ester reactive groups separated by a six-unit polyethylene glycol spacer. It is used for conjugation to primary amines and as a linker in PROTAC and cleavable ADC synthesis.
- Provides two NHS ester reactive groups for amine coupling.
- PEG6 spacer improves solubility and flexibility.
- Suitable for PROTAC and ADC linker synthesis.
- Molecular weight 576.55 g/mol and formula C24H36N2O14.
- Available in multiple pack sizes including 1 g.
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).
Medchemexpress LLC IL-12 Human Biotin 100ug | 100ug
IL-35 protein plays a key role in immune regulation forming IL-12 cytokine with IL12B or IL-35 cytokine with EBI3/IL27B IL-12 modulates T cell and natural killer cell responses and induces interferon gamma production IL-12 Protein Human (Biotinylated HEK293 His-Avi) is a recombinant protein dimer complex containing human-derived IL-12 protein expressed by HEK293 with C-Avi C-His labeled tag IL-12 Protein Human (Biotinylated HEK293 His-Avi) has molecular weight of 40-45 kDa
Medchemexpress LLC Mal-PEG2-NHS ester | 1433997-01-3 | 98.6% | 354.31 g/mol | C15H18N2O8 | 1 G
Mal-PEG2-NHS ester is a non-cleavable ADC linker combining a maleimide reactive group, a two-unit polyethylene glycol spacer, and an N-hydroxysuccinimide (NHS) ester for amine coupling. It is supplied as a purified reagent for bioconjugation and linker chemistry applications.
- Non-cleavable maleimide-NHS bifunctional linker
- PEG2 spacer improves solubility and reduces steric hindrance
- NHS ester enables efficient coupling to primary amines
- Maleimide group enables thiol-selective conjugation
- High purity suitable for ADC synthesis and bioconjugation
Medchemexpress LLC B7-H6 Human Biotin 50ug | 50ug
B7-H6 a distinctive monomeric protein uniquely triggers NCR3-dependent natural killer (NK) cell activation specifically interacting with NCR3 while avoiding engagement with other NK cell-activating receptors (NCR1 NCR2 and KLRK1) This specificity underscores B7-H6 s unique role in initiating NK cell responses through the NCR3 pathway within the intricate network of NK cell activation mechanisms B7-H6 Protein Human (Biotinylated HEK293 His-Avi) is the recombinant human-derived B7-H6 protein expressed by HEK293 with C-His C-Avi labeled tag
Medchemexpress LLC Biotin-LC-LC-NHS | 89889-52-1 | 98.0% | 567.70 g/mol | C26H41N5O7S | 100 MG
Biotin-LC-LC-NHS is an amino-reactive N-hydroxysuccinimide (NHS) ester used to biotinylate primary amines on proteins, antibodies, and small molecules. It contains an extended LC-LC spacer arm to improve accessibility of the biotin tag and is supplied as a solid for laboratory conjugation and cross-linking applications.
- Reacts with primary amines for stable biotinylation.
- Extended LC-LC spacer improves tag accessibility.
- Provided as a solid, white to light yellow powder.
- Soluble in DMSO at 100 mg/mL; compatible with common in vivo formulation vehicles.
- Store protected from light under nitrogen at -20°C; in solution, store at -80°C for long-term storage.
Medchemexpress LLC 1,2-distearoyl-sn-glycero-3-phosphoethanolamine N-hydroxysuccinimide | 1383932-86-2 | 95.0% | 945.21 | C49H89N2O13P | 50 MG
DSPE-NHS is an N-hydroxysuccinimide (NHS) ester-functionalized phospholipid for bioconjugation and liposome formulation. It self-assembles into lipid bilayers in aqueous solution, and the NHS ester reacts with primary amines on proteins or peptides to form stable amide bonds, enabling antibody labeling and nanoparticle surface modification.
- Enables covalent coupling to primary amines via NHS ester chemistry.
- Self-assembles into lipid bilayers for liposome formation.
- Supports antibody labeling and nanoparticle surface functionalization.
- Stable under recommended storage when kept dry and protected from light.
- Supplied in laboratory-scale quantities suitable for research use.