Biotin and derivatives
Medchemexpress LLC IL-13 Human Biotin 20ug
IL-13 protein is a cytokine involved in allergic inflammation immune response to parasites and B cell proliferation IL-13 Protein Human (Biotinylated HEK293 Avi-His) is the recombinant human-derived IL-13 protein expressed by HEK293 with C-Avi C-6 His labeled tag
eMolecules 1353016-71-3 | DBCO-NHS ester | Knight Chemicals, Inc. | MFCD24386367 | 402.406 | C23H18N2O5 | 99.000 | O=C(CCC(=O)N1Cc2ccccc2C#Cc2ccccc12)ON1C(=O)CCC1=O | 5g | 894265339
DBCO-NHS ester | Knight Chemicals, Inc. | 1353016-71-3 | MFCD24386367 | 402.406 | C23H18N2O5 | 99.000 | O=C(CCC(=O)N1Cc2ccccc2C#Cc2ccccc12)ON1C(=O)CCC1=O | 5g | 894265339
![eMolecules 1204834-00-3 | Azido-peg8-nhs ester | Combi-Blocks | MFCD13184949 | 564.589 | C23H40N4O12 | 95.000 | [N-]=[N+]=NCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O | 250mg | 335375127](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000190050.jpg-250.jpg)
eMolecules 1204834-00-3 | Azido-peg8-nhs ester | Combi-Blocks | MFCD13184949 | 564.589 | C23H40N4O12 | 95.000 | [N-]=[N+]=NCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O | 250mg | 335375127
Azido-peg8-nhs ester | Combi-Blocks | 1204834-00-3 | MFCD13184949 | 564.589 | C23H40N4O12 | 95.000 | [N-]=[N+]=NCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O | 250mg | 335375127
Medchemexpress LLC 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-NHS (DSPE-NHS) | 1383932-86-2 | MFCD34561791 | 95.0% | 945.2 g/mol | C49H89N2O13P | 10 MG
DSPE-NHS is an N-hydroxysuccinimide (NHS) ester functionalized distearoyl phosphoethanolamine used for bioconjugation and liposome formation. The reagent self-assembles into lipid bilayers in aqueous solution, and the NHS ester reacts selectively with primary amines to form stable amide bonds, enabling antibody labeling and attachment of amine-containing molecules for nanoparticle and drug-delivery applications.
- Reactive NHS ester for covalent coupling to primary amines.
- Self-assembles into lipid bilayers in aqueous solution.
- Enables antibody labeling and protein conjugation.
- Suitable for liposome and nanocarrier preparation.
- Long-term storage recommended at -20 °C, sealed and protected from moisture and light.
Medchemexpress LLC Biotin-peg-biotin | 194920-55-3 | 99.3% | C26H44N6O6S2 | 100 MG
Biotin-PEG-Biotin is a PEG-based PROTAC linker that can be 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.
- Used in the synthesis of PROTACs
- Exploits the intracellular ubiquitin-proteasome system
- Selectively degrades target proteins
Medchemexpress LLC Biotin-Gastrin Releasing Peptide, human TFA | 3085.67 | 10 MG
Biotin-Gastrin Releasing Peptide, human TFA is a biotinylated gastrin releasing peptide (GRP). Gastrin-releasing peptide (GRP) is a neuropeptide with growth-stimulatory and tumorigenic properties.
- Molecular weight: 3085.67
- Chemical formula: C140H218N40O33S3.xC2HF3O2
- Appearance: Solid
- Soluble in DMSO at 100 mg/mL
- Shipping: Room temperature
- Storage (powder): -80°C for 2 years, -20°C for 1 year
- Storage (in solvent): -80°C for 6 months, -20°C for 1 month
eMolecules 1688598-83-5 | NHS-PEG1-SS-PEG1-NHS | Medchem Express436.410 | C14H16N2O10S2 | 98.000 | O=C(OCCSSCCOC(=O)ON1C(=O)CCC1=O)ON1C(=O)CCC1=O | 100mg | 816503954
NHS-PEG1-SS-PEG1-NHS | Medchem Express | 1688598-83-5436.410 | C14H16N2O10S2 | 98.000 | O=C(OCCSSCCOC(=O)ON1C(=O)CCC1=O)ON1C(=O)CCC1=O | 100mg | 816503954
eMolecules 1807518-72-4 | Mal-PEG1-NHS ester | Medchem Express | MFCD26127783 | 310.262 | C13H14N2O7 | 98.000 | O=C(CCOCCN1C(=O)C=CC1=O)ON1C(=O)CCC1=O | 10mg | 795391586
Mal-PEG1-NHS ester | Medchem Express | 1807518-72-4 | MFCD26127783 | 310.262 | C13H14N2O7 | 98.000 | O=C(CCOCCN1C(=O)C=CC1=O)ON1C(=O)CCC1=O | 10mg | 795391586
eMolecules 1807518-72-4 | Mal-PEG1-NHS ester | Broadpharm | MFCD26127783 | 310.262 | C13H14N2O7 | 0.000 | O=C(CCOCCN1C(=O)C=CC1=O)ON1C(=O)CCC1=O | 500mg | 311074500
Mal-PEG1-NHS ester | Broadpharm | 1807518-72-4 | MFCD26127783 | 310.262 | C13H14N2O7 | 0.000 | O=C(CCOCCN1C(=O)C=CC1=O)ON1C(=O)CCC1=O | 500mg | 311074500
Medchemexpress LLC Biotin-PEG2-NH-Boc | 175885-18-4 | C21H38N4O6S | 1 G
Biotin-PEG2-NH-Boc is identified as a biotin-labeled, PEG-based linker used in the synthesis of PROTACs. These PROTACs are compounds designed with two distinct ligands connected by a linker; one ligand targets an E3 ubiquitin ligase, and the other targets a specific protein. This mechanism exploits the intracellular ubiquitin-proteasome system to facilitate the selective degradation of target proteins.
- Functions as a linker for targeted protein degradation research.
- Utilizes a biotin label.
- Peg-based structure.
- Acts through the ubiquitin-proteasome system.
- Facilitates selective protein degradation.
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- | 500 MG
m-PEG-NHS ester (MW 10000) is a PEG-based PROTAC linker that facilitates the synthesis of PROTACs. These PROTACs leverage the intracellular ubiquitin-proteasome system to achieve selective degradation of target proteins. This product is intended for research purposes only.
- PEG-based PROTAC linker
- Enables the synthesis of PROTACs
- Utilizes the ubiquitin-proteasome system
- Achieves selective degradation of target proteins
- Suitable for research use only
Abcam Biotin-de x tran, 10MG
MW 73400 g/mol, Purity >98%. Membrane impermeant dextran conjugate containing covalently attached biotin molecules (Vitamin H) making it useful in streptavidin/avidin assay systems. The attached biotins are commonly used haptens that can be detected by using its strong affinity for the proteins avidin (from egg white) or streptavidin. This conjugate contains approximately 12 biotin groups/dextran (based on amine assay; with approx. 1 amine/40 glucose residues). The excess amino groups are not capped, and they can be further labeled with a fluorophore, or can be fixed in place with formaldehyde, lysine or glutaraldehyde, allowing subsequent tissue processing, such as sectioning.
The product is subject to the following: Abcam Restricted Use Statement
Medchemexpress LLC DBCO-NHS ester 2 250mg | 1384870-47-6 | 250 MG
DBCO-NHS ester 2 is a dibenzocyclooctyne-derived N-hydroxysuccinimide (NHS) ester used as an amine-reactive linker for copper-free click chemistry and antibody-drug conjugate synthesis. The activated NHS ester enables rapid conjugation to primary amines, while the DBCO moiety enables strain-promoted azide-alkyne cycloaddition (SPAAC) without copper catalysts.
- Amine-reactive NHS ester for efficient amide bond formation
- Enables strain-promoted azide-alkyne cycloaddition (SPAAC) for copper-free click chemistry
- High purity (99.69%) suitable for bioconjugation applications
- Molecular weight 430.45 Da; formula C25H22N2O5
- Powder form; store at -20°C for long-term stability
- Packaged as a 250 mg solid for laboratory use
Biotium CF790 Succinimidyl Ester
CF Dye Succinimidyl Esters (SE, also known as NHS esters) are amine-reactive fluorescent dyes. SE dyes are commonly used to label antibodies and other proteins on free amine groups, such as lysine residues. CF dyes are Biotium's line of next-generation fluorescent dyes with advantages in brightness, photostability, and conjugate specificity compared to other fluorescent dyes. Near-infrared fluorescent CF790 dye has excitation/emission at 784/806 nm.
Medchemexpress LLC Biotin pentafluorophenyl ester | 120550-35-8 | 97.0% | 100 MG
Biotin pentafluorophenyl ester is a biotinylated activated ester used to introduce a biotin affinity tag through reaction with nucleophiles. It serves as an alkyl/ether-based PROTAC linker and reagent for biotinylation in chemical biology and proteomics workflows.
- Activated pentafluorophenyl (PFP) ester for efficient coupling to amines and alcohols.
- Introduces a biotin handle for streptavidin-based capture and detection.
- Useful in PROTAC linker assembly, probe synthesis, and affinity enrichment.
- Supplied as a white to off-white solid with molecular weight 410.36 g·mol⁻¹.