Biotin and derivatives
Medchemexpress LLC Cy3B NHS ester | 228272-52-4 | 97.8% | 10 MG
Cy3B NHS ester is a fluorescent labeling reagent that covalently attaches a cyanine-like fluorophore to primary amines via NHS-ester chemistry, enabling bright and photostable labeling of biomolecules for detection and imaging.
- Reactive N-hydroxysuccinimide (NHS) ester for efficient coupling to primary amines.
- Bright, photostable cyanine-like fluorophore for fluorescence detection.
- High purity (97.8%) for reliable labeling performance.
- Molecular weight 657.73 and CAS number 228272-52-4.
- Available in multiple package sizes, including 10 mg.
Medchemexpress LLC Azido-PEG9-NHS ester | 2801772-87-0 | >98% | C25H44N4O13 | 50 MG
Azido-PEG9-NHS ester is a PEG-based PROTAC linker designed for the synthesis of PROTACs. This click chemistry reagent features an Azide group, enabling it to participate in copper-catalyzed azide-alkyne cycloaddition (CuAAc) reactions with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with compounds containing DBCO or BCN groups. For optimal stability, store in a tightly sealed container in a cool, well-ventilated area, away from direct sunlight and ignition sources.
- Can be used in the synthesis of PROTACs
- Features an Azide group for click chemistry applications
- Participates in copper-catalyzed azide-alkyne cycloaddition (CuAAc)
- Compatible with strain-promoted alkyne-azide cycloaddition (SPAAC) with DBCO or BCN groups
- Recommended storage at -20°C for up to 3 years in pure form
Medchemexpress LLC Biotin-PEG8-acid | 2143964-62-7 | 99.8% | C29H53N3O12S | 50 MG
Biotin-PEG8-acid is a biotin-labeled, PEG-based PROTAC linker that can be used in the synthesis of PROTACs. PROTACs contain two different ligands connected by a linker: one for an E3 ubiquitin ligase and the other for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins. It is for research use only.
- Appears as a white to off-white solid
- Molecular weight: 667.81
Medchemexpress LLC Norbornene-NHS | 1888335-48-5 | C12H13NO5 | 100 MG
Norbornene-NHS is a click chemistry reagent that functions as a dienophile. It is utilized for conjugation through copper-free Click reactions with tetrazines.
- Classified as a click chemistry reagent.
- Acts as a dienophile.
- Used for conjugation.
- Conjugation occurs via copper-free click reactions.
- Reacts with tetrazines in the conjugation process.
- For research use only and not intended for human use.
![eMolecules 1418022-42-0 | Biotin-PEG11-amine | Broadpharm | MFCD21363309 | 770.980 | C34H66N4O13S | 98.000 | NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12 | 1g | 309209133](https://assets.fishersci.com/TFS-Assets/CCG/product-images/VN00128114-309209133.PNG-250.jpg)
eMolecules 1418022-42-0 | Biotin-PEG11-amine | Broadpharm | MFCD21363309 | 770.980 | C34H66N4O13S | 98.000 | NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12 | 1g | 309209133
Biotin-PEG11-amine | Broadpharm | 1418022-42-0 | MFCD21363309 | 770.980 | C34H66N4O13S | 98.000 | NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12 | 1g | 309209133
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 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.
Medchemexpress LLC Biotin-PEG24-NHS ester | 00-00-0 | 98.0% | C65H120N4O30S | 10MG
Biotin-PEG24-NHS ester is a polyethylene glycol-based biotinylation reagent that couples to primary amines via NHS-ester chemistry to form stable amide bonds. The long PEG24 spacer improves aqueous solubility and reduces steric hindrance, making the reagent suitable for PROTAC linker assembly and bioconjugation of proteins, peptides, and small molecules.
- Reacts with primary amines via NHS-ester chemistry.
- Long PEG24 spacer enhances solubility and reduces steric hindrance.
- High purity (98.0%) for consistent conjugation performance.
- White to off-white solid, convenient for handling and storage.
- Stable under recommended storage conditions and in solvent for defined timeframes.
eMolecules Medchem Express | Fmoc-NH-PEG11-CH2CH2COOH | 100mg | 532149897 | HY-130870 | 795.92 | C40H61NO15
Medchem Express | Fmoc-NH-PEG11-CH2CH2COOH | 100mg | 532149897 | HY-130870 | | 795.920 | C40H61NO15
Medchemexpress LLC Cancer antigen 125 (MUC16), recombinant human, biotinylated | >95.0% | 50UG
Recombinant human CA125 (MUC16) is a biotinylated protein fragment (~685 amino acids) produced in HEK293 cells with C-terminal His and Avi tags. It is intended for binding studies, assay development, and detection workflows that use biotin-streptavidin capture.
- Biotinylated for streptavidin-based capture and detection.
- Expressed in HEK293 cells to provide mammalian glycosylation.
- C-terminal His and Avi tags for purification and site-specific biotinylation.
- Supplied at laboratory quantity suitable for assay development.
- High purity as determined by reducing SDS-PAGE (>95%).
- Molecular weight range 90-140 kDa reflecting glycosylated forms.
Medchemexpress LLC Interleukin 23 | >90.0% | 20UG
Recombinant human interleukin-23 (heterodimer of p19 and p40), biotinylated and produced in HEK293 cells. Supplied as a 0.2 μm filtered PBS solution, this protein is designed for research into IL-23 receptor binding, JAK/STAT signaling, and Th17-related immune responses. Handle and store according to supplier recommendations to maintain activity.
- Human IL-23 heterodimer (p19 + p40).
- Biotinylated for affinity-based detection and capture.
- Expressed in HEK293 mammalian cells for native glycosylation.
- Contains C-terminal His and Avi tags to facilitate purification and immobilization.
- Purity >90% as determined by reducing SDS-PAGE.
- Predicted molecular weight ~55.8 kDa.
- Supplied in PBS, 0.2 μm filtered; avoid repeated freeze-thaw cycles.
Sigma Aldrich Fine Chemicals Biosciences Biotin powder, BioReagent, suitable for cell culture, suitable for insect cell culture, suitable for plant cell culture, >=99% | 58-85-5 | MFCD00005541 | 500MG
Biotin powder, BioReagent, suitable for cell culture, suitable for insect cell culture, suitable for plant cell culture, >=99% | Purity: >=99% | Mol Wt: 244.31 | 58-85-5 | MFCD00005541 | 500MG
Medchemexpress LLC KAT6A protein, human (biotinylated, Avi) | 93.5% | 10UG
KAT6A Protein, Human (Biotinylated, Avi) is a recombinant fragment of the human histone acetyltransferase KAT6A (residues G497-I780), expressed in E. coli and N-terminally labeled with an Avi biotinylation tag. The material is provided at microgram scale for research use, characterized by reducing SDS-PAGE, and has an expected molecular weight of approximately 35.6 kDa.
- Biotinylated via Avi tag for streptavidin-based capture and detection.
- Suitable for protein-protein interaction and binding assays.
- Purity greater than 90% as determined by reducing SDS-PAGE.
- Recombinantly expressed in E. coli for scalable production.
- Covers the KAT6A domain G497-I780 for domain-specific studies.
- Supplied in microgram quantities for biochemical and biophysical assays.
eMolecules N-Boc-PEG11-alcohol | | | 1g
Broadpharm | N-Boc-PEG11-alcohol | 1g | 603111800 | BP-25642 | 98.000 | | | 601.731 | C27H55NO13
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Medchemexpress LLC 4,7,12-Trioxa-10-azatetradecanoic acid, 13,13-dimethyl-11-oxo-, 2,5-dioxo-1-pyrrolidinyl ester | 2183440-73-3 | ≥98.0% | C16H26N2O8 | 1 G
Boc-NH-PEG2-C2-NHS ester is an alkyl/ether-based PROTAC linker utilized in the synthesis of PROTACs. PROTACs leverage the intracellular ubiquitin-proteasome system for selective degradation of target proteins. This product is a white to off-white solid and is intended for research use only.
- Alkyl/ether-based PROTAC linker
- Used in the synthesis of PROTACs
- Exploits the intracellular ubiquitin-proteasome system
- Selectively degrades target proteins
- White to off-white solid appearance
- For research use only