Biotin and derivatives
Medchemexpress LLC Biotin-PEG3-iodoacetamide | 2306161-26-0 | 97.0% | 10 MG
Biotin-PEG3-iodoacetamide is a PEG-based linker combining a biotin tag, a three-unit PEG spacer, and an iodoacetamide reactive group. It selectively alkylates cysteine residues under mild conditions to introduce a biotin handle for affinity capture, detection, and enrichment workflows.
- Selective cysteine labeling via iodoacetamide chemistry.
- Biotin tag enables high-affinity streptavidin capture.
- PEG3 spacer improves solubility and reduces steric hindrance.
- Suitable for protein labeling, pull-downs, and detection assays.
- Provided as a small-molecule reagent for research use.
Medchemexpress LLC Diazo biotin-PEG3-azide | 1339202-33-3 | MFCD28334530 | 95.5% | C33H45N9O7S | 10MG
Diazo biotin-PEG3-azide is a multifunctional PEG3 linker combining a cleavable diazo functional group, a biotin affinity tag, and an azide reactive handle. It is designed for efficient biotinylation and capture of alkyne-bearing biomolecules using click chemistry and for use as a linker in chemical biology workflows.
- Provides azide functionality for CuAAC and SPAAC click reactions.
- Includes a biotin tag for affinity purification and detection.
- Contains a diazo group enabling photo-cleavage or crosslinking.
- PEG3 spacer improves solubility and reduces steric hindrance.
- Suitable for biotinylation, pull-down assays, and linker synthesis.
Medchemexpress LLC (+)-Biotin 4-nitrophenyl ester | 33755-53-2 | ≥98.0% | 250 MG
(+)-Biotin-ONP is an alkyl chain-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.
- Alkyl chain-based PROTAC linker
- Can be used in the synthesis of PROTACs
- Exploits the intracellular ubiquitin-proteasome system
- Selectively degrades target proteins
- For research use only
Medchemexpress LLC Biotin-DADOO TFA | 194920-57-5 | 95.0% | 250 MG
Biotin-DADOO TFA is a biotinylating reagent that is conjugated to CMC thiosulfate.
- Can be utilized to synthesize biotin-estradiol conjugates.
- Used for the determination of plasma estradiol concentrations by enzyme immunoassay.
- Appearance: oil.
- Color: light yellow to brown.
- For research use only.
Medchemexpress LLC Biotin-PEG3-NHS ester | 1253286-56-4 | 98.4% | 25 MG
Biotin-PEG3-NHS ester is a PEG-based PROTAC linker used in the synthesis of PROTAC.
- PEG-based PROTAC linker
- Used in PROTAC synthesis
Medchemexpress LLC Biotin-DADOO (Biotinyl-3,6-dioxaoctanediamine) | 138529-46-1 | 98.0% | 500 MG
Biotin-DADOO is a biotin-containing amine compound and a biotinylation reagent. It acts as an amino component in the nucleophilic ring-opening reaction of epoxidized ω-double bonds during the synthesis of biotinylated inhibitor derivatives. This product can be conjugated with carboxymethyl cellulose derivatives and is involved in the synthesis of biotin-estradiol conjugates for enzyme immunoassays. It can also be utilized in influenza A research.
- Captures free influenza neuraminidase on streptavidin-coated polystyrene plates.
- Forms stable self-assembled monolayers (SAMs) on planar gold surfaces.
- Forms a stable biotin-estradiol conjugate.
Med Vet International Hydroxychloroquine Tablets (Generic Plaquenil), 200mg, 100ct
VET LICENSE NEEDS TO BE PROVIDED IN 3-4 BUSINESS DAYS OR ORDER WILL BE CANCELLED
Hydroxychloroquine is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus.
Medchemexpress LLC CD79B Human Biotin 100ug
Recombinant human CD79B (extracellular residues Ala29-Asp159) produced in HEK293 cells and enzymatically biotinylated via an Avi tag. The construct includes a C-terminal His-Avi fusion, is >95% pure, and migrates ~35-45 kDa on SDS-PAGE due to glycosylation. Supplied with storage and reconstitution guidance for use in immobilization and binding assays.
- Site-specific biotinylation for consistent immobilization.
- C-terminal His-Avi tag for purification and controlled biotinylation.
- Mammalian expression preserves native glycosylation and folding.
- High purity suitable for ELISA, SPR/BLI, and flow cytometry.
- Storage and reconstitution recommendations to maintain activity.
Medchemexpress LLC Undecanoic acid, biotinyl N-hydroxysuccinimide ester | 887628-40-2 | MFCD05865045 | 99.5% | C25H40N4O6S | 10MG
Biotin-C10-NHS Ester is an alkyl/ether-based PROTAC linker that provides an NHS-activated biotinylation reagent for conjugation to primary amines. It is intended for research use in chemical synthesis and bioconjugation workflows, enabling introduction of a biotin affinity tag for purification and detection; follow the manufacturer datasheet and COA for handling and storage instructions.
- NHS-activated ester for efficient amine coupling.
- 10-carbon spacer to reduce steric hindrance during binding.
- Introduces a biotin tag for affinity purification and detection.
- High purity suitable for synthetic and analytical applications.
- Supplied with datasheet and certificate of analysis for quality verification.
Medchemexpress LLC Nsp-dmae-nhs | 194357-64-7 | 99.5% | 5 MG
Nsp-dmae-nhs | 194357-64-7 | 99.5% | 5 MG
Medchemexpress LLC NHS-modified MMAF (trifluoroacetate) | 96.0% | 1165.34 | C57H87F3N8O14 | 50 MG
NHS-modified MMAF (trifluoroacetate) is an NHS-activated derivative of monomethyl auristatin F provided as the trifluoroacetate salt. It is used as a synthetic intermediate for preparing antibody-drug conjugate payload-linker constructs via NHS-ester-mediated conjugation to amines on antibody binders.
- NHS-activated derivative for conjugation chemistry.
- Provided as the trifluoroacetate salt for stability.
- High purity suitable for research and ADC synthesis.
- Available in research-scale quantities for lab use.
- Documented with COA and SDS for quality and safety information.
Medchemexpress LLC Mal-PEG8-NHS ester | 2055033-05-9 | 98.96% | 25 MG
Mal-PEG8-NHS ester is a PEG-based PROTAC linker designed for the synthesis of PROTACs. This compound is for research use only and aids in the development of PROTACs, which exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.
- PEG-based PROTAC linker
- Can be used in the synthesis of PROTACs
- Exploits the intracellular ubiquitin-proteasome system
- Selectively degrades target proteins
- For research use only
Medchemexpress LLC UV Cleavable Biotin-PEG2-Azide | 1192802-98-4 | 95.6% | C38H51N7O9S | 25 MG
UV Cleavable Biotin-PEG2-Azide is a PEG-based PROTAC linker used in the synthesis of PROTACs. It is also a click chemistry reagent.
- Contains an azide group
- Participates in copper-catalyzed azide-alkyne cycloaddition reactions (CuAAC) with alkyne groups
- Undergoes strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with DBCO or BCN groups
Medchemexpress LLC NSP-SA-NHS | 199293-83-9 | 99.65% | 100 MG
NSP-SA-NHS is an acridinium ester used for chemiluminescent immunoassay. A rapid and sensitive chemiluminescent immunoassay for Bisphenol A (BPA) has been developed using NSP-SA-NHS-labeled. It is for research use only.
- Used for chemiluminescent immunoassay.
- Enabled the development of a rapid and sensitive chemiluminescent immunoassay of Bisphenol A (BPA).
Medchemexpress LLC Biotin-C5-Azide (DecarboxyBiotin-N3) | 1260586-88-6 | C10H17N5OS | 25 MG
Biotin-C5-Azide (DecarboxyBiotin-N3) is a versatile biotin reagent designed for preparing biotinylated conjugates. It functions as a click chemistry reagent, featuring an azide group that enables participation in various cycloaddition reactions.
- Can be used to prepare biotinylated conjugates
- Click chemistry reagent containing an azide group
- Undergoes copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing alkyne groups
- Participates in strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups