Biotin and derivatives
Medchemexpress LLC Dspe-biotin | 133695-76-8 | 97.5% | 974.36 | C51H96N3O10PS | 25 MG
DSPE-Biotin is a biotin-functionalized phospholipid designed to introduce biotin into lipid-based systems such as liposomes and micelles for streptavidin/avidin-mediated capture, labeling, or immobilization in biochemical and biophysical research applications.
- Biotin functional group enables strong streptavidin/avidin binding.
- Compatible with incorporation into liposomes, micelles, and other lipid assemblies.
- High purity (97.5%) supports reproducible experimental results.
- Solid, off-white to light yellow appearance for easy handling.
- Soluble in DMSO (≈1.3 mg/mL) with sonication and warming to 60°C.
- Store protected from light at -20°C; in solvent, store at -80°C for up to 6 months.
Medchemexpress LLC exo-BCN-NHS carbonat 100mg
exo-BCN-NHS carbonate carbonate contains BCN group Strain-promoted alkyne-azide cycloaddition (SPAAC) can also occur with molecules containing DBCO or BCN groups
Medchemexpress LLC M-PEG13-NHS ester | 3063847-98-0 | 95.0% | C32H59NO17 | 100 MG
m-PEG13-NHS ester is a PEG-based PROTAC linker designed for the synthesis of PROTACs. This compound is intended for research use only.
- PEG-based PROTAC linker
- Utilized in the synthesis of PROTACs
- For research use only
Medchemexpress LLC Bis-SS-C3-NHS ester | 98604-88-7 | 98.0% | 432.47 g/mol | C16H20N2O8S2 | 250 MG
Bis-SS-C3-NHS ester is a cleavable antibody-drug conjugate (ADC) linker containing N-hydroxysuccinimide (NHS) ester functional groups for amine coupling and a disulfide spacer that enables payload release under reductive intracellular conditions.
- Cleavable disulfide spacer for intracellular payload release.
- NHS ester functional groups for efficient amine coupling to biomolecules.
- High purity suitable for conjugation chemistry.
- White to off-white solid physical form.
- Recommended storage at -20°C, sealed and protected from moisture; in solvent, -80°C for up to 6 months.
Medchemexpress LLC N3-peg3-c2-nhs ester | 1245718-89-1 | MFCD23726613 | 99.9% | 344.32 g/mol | C13H20N4O7 | 10 G
Azide-terminated PEG3 NHS ester linker for bioconjugation and click-chemistry labeling. The reagent contains an azide group for copper-catalyzed azide-alkyne cycloaddition (CuAAC) and is compatible with strain-promoted alkyne-azide cycloaddition (SPAAC). It is supplied as a high-purity NHS ester for amine conjugation and includes a three-unit PEG spacer to improve solubility and reduce steric hindrance.
- Azide functional group for click chemistry reactions.
- NHS ester for efficient conjugation to primary amines.
- Three-unit PEG spacer to enhance solubility.
- Noncleavable linker for stable conjugation.
- High purity suitable for research applications.
- Available in laboratory-scale 10 g packaging.
Medchemexpress LLC Bis-PEG21-NHS ester | 2221948-98-5 | 98.0% | 1237.34 | C54H96N2O29
Bis-PEG21-NHS ester is a polyethylene glycol (PEG)-based bifunctional N-hydroxysuccinimide (NHS) ester linker used for bioconjugation. It provides a hydrophilic PEG21 spacer with two NHS-activated ester termini for conjugation to primary amines and is used in the synthesis of antibody-drug conjugates and PROTAC linkers. Typical purity is 98.0% and molecular weight is 1,237.34.
- Bifunctional PEG linker with two NHS ester termini.
- Hydrophilic PEG21 spacer to improve solubility.
- Suitable for ADC and PROTAC linker synthesis.
- High purity (98.0%) for research applications.
- Available in multiple pack sizes for synthetic workflows.
Medchemexpress LLC LAIR1 Human Biotin 100ug
LAIR1 protein has a negative regulatory effect on NK cells B cells and T cells It activates the phosphatases PTPN6 and PTPN11 inhibits calcium increases in B cells and regulates cytokine production in CD4 T cells LAIR1 Protein Human (Biotinylated HEK293 Avi-His) is the recombinant human-derived LAIR1 protein expressed by HEK293 with C-Avi C-6 His labeled tag
Medchemexpress LLC DBCO-NHS ester 3 250mg | 1393350-27-0 | 416.43 g·mol⁻1 | C24H20N2O5 | 250 MG
DBCO-NHS ester 3 is a dibenzocyclooctyne (DBCO)-N-hydroxysuccinimide (NHS) ester reagent used to functionalize primary amines for copper-free strain-promoted alkyne-azide cycloaddition (SPAAC) bioconjugation. It enables installation of a DBCO handle for subsequent conjugation to azide-labeled partners.
- Installs DBCO onto primary amines for SPAAC (copper-free) click chemistry.
- Suitable for antibody-drug conjugate linker installation, probe labeling, and general bioconjugation.
- High purity, typically 95.6%, provided as a solid white to off-white powder.
- Molecular weight 416.43 g·mol⁻1; formula C24H20N2O5.
- Available in laboratory-scale 250 MG pack size.
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-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 N-Boc-PEG11-alcohol | | | 1g
Broadpharm | N-Boc-PEG11-alcohol | 1g | 603111800 | BP-25642 | 98.000 | | | 601.731 | C27H55NO13
If you are unable to find the chemical you are looking for, make sure you are logged into your fishersci.com account and click on the following link:
eMolecules Building Block Tool
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
Chem-Impex International, Inc. Biotin-N-hydroxysuccinimide | 35013-72-0 | MFCD00078531 | 1G
Biotin-N-hydroxysuccinimide, 35013-72-0, MFCD00078531, 1G
Sigma Aldrich Fine Chemicals Biosciences Biotin-maleimide >=95% (TLC), powder | 116919-18-7 | 100MG
Biotin-maleimide >=95% (TLC), powder | Purity: >=95% (TLC) | Mol Wt: 451.54 | 116919-18-7 | 100MG
