Biotin and derivatives
Medchemexpress LLC Cyanine5.5 NHS ester tetrafluoroborate | 2375105-86-3 | 98.4% | 767.66 | 50 MG
Cyanine5.5 NHS ester tetrafluoroborate is a common fluorescent marker that belongs to the cyanine dye series. It is designed to interact with biomolecules and can bind to double-helical DNA through intercalation, leading to enhanced fluorescence upon binding.
- Functions as a common fluorescent marker for biomolecules
- Interacts with various biomolecules
- Binds to double-helical DNA through intercalation
- Enhances fluorescence upon DNA binding
- Belongs to the cyanine dye series
Medchemexpress LLC NHS-MMAF | 1404073-19-3 | 97.2% | C49H78N6O12 | 10MG
NHS-MMAF is an N-hydroxysuccinimide-activated derivative of monomethyl auristatin F used as a payload intermediate for antibody-drug conjugate (ADC) synthesis. It acts as a tubulin polymerization inhibitor and is intended for research use in ADC linker and conjugation development; it is described in patent WO2012143499 (intermediate 219).
- NHS-activated ester for amine conjugation.
- Suitable for antibody-drug conjugate linker chemistry.
- High reported purity (97.2%).
- Solid, white to off-white appearance for easy handling.
- Soluble in DMSO for reaction setup.
- Serves as a payload precursor for cytotoxic conjugates.
Medchemexpress LLC IL-12 Human Biotin 20ug | 20ug
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
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 DOTA-NHS-ester (TFA) | 00-00-0 | MFCD23381190 | 95.0% | 615.51 g·mol⁻¹ | C22H32F3N5O12 | 5 MG
DOTA-NHS-ester TFA is an activated N-hydroxysuccinimide (NHS) ester of the DOTA chelator supplied as the trifluoroacetic acid (TFA) salt. It enables efficient conjugation of the DOTA chelator to amine-containing biomolecules for subsequent radiolabeling and imaging applications such as PET and SPECT.
- Activated NHS ester for rapid conjugation to primary amines.
- TFA salt form improves solubility and handling.
- Facilitates stable metal chelation for radiolabeling.
- Suitable for labeling peptides, proteins, and affibodies.
- Available in small-scale research quantities for preclinical work.
Medchemexpress LLC Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 trifluoroacetate | 00-00-0 | 98.0% | C38H66F3N13O11S | 10MG
Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 trifluoroacetate is an azide-containing biotinylated reagent for click chemistry labeling of proteins. It participates in copper-catalyzed azide-alkyne cycloaddition (CuAAC) and strain-promoted alkyne-azide cycloaddition (SPAAC) to conjugate with alkyne-bearing probes, enabling detection of protein modification sites. Intended for research use.
- Contains an azide group for CuAAC and SPAAC reactions.
- Biotin tag enables affinity detection and signal amplification.
- PEG3 linker provides hydrophilicity and spacer flexibility.
- High purity (98.0%) suitable for labeling applications.
- White to off-white solid with recommended handling precautions.
- Soluble in DMSO at 100 mg/mL; ultrasonic assistance recommended.
- Store sealed at -20°C; in solvent store at -80°C for long-term stability.
![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
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
Medchemexpress LLC GFRAL Human Biotin 50ug | 50ug
The GFRAL protein is a brainstem-restricted receptor for GDF15 that regulates food intake energy expenditure and body weight in response to metabolic and toxin-induced stress GFRAL binds to its ligand GDF15 interacts with RET and activates the MAPK and AKT signaling pathways GFRAL Protein Human (Biotinylated HEK293 His-Avi) is the recombinant human-derived GFRAL protein expressed by HEK293 with C-Avi C-His labeled tag