Biotin and derivatives
Chem-Impex International, Inc. Biotin p-nitrophenyl ester | MFCD15141972 | 250MG
Biotin p-nitrophenyl ester, MFCD15141972, 250MG
Apexbio Technology LLC Biotin-11-dUTP(Synonyms: Biotin-11-deoxyuridine triphosphate, Biotin-11-dUTP lithium salt), 10ul (5 mM), CAS: 1221498-88-9.
Biotin-11-dUTP (CAS 1221498-88-9) is a biotin-conjugated analogue of deoxythymidine triphosphate (dTTP) that can be incorporated enzymatically into DNA or cDNA sequences during polymerase reactions After integration labeled nucleic acid fragments can be detected using streptavidin coupled to horseradish peroxidase (HRP) alkaline phosphatase (AP) fluorescent molecules or bead-based capture systems This approach is frequently utilized in polymerase chain reaction (PCR) nick translation reverse transcription assays and apoptosis studies facilitating DNA probe labeling and molecular analysis workflows
Medchemexpress LLC DBCO-N-bis(PEG4-NHS ester) | 2639395-38-1 | 96.2% | 995.03 | C49H62N4O18 | 5 MG
DBCO-N-bis(PEG4-NHS ester) is a PEG-based bifunctional linker that contains two PEG4-NHS ester groups and a dibenzocyclooctyne (DBCO) moiety. It is designed for bioconjugation and protein labeling via NHS-ester chemistry and for copper-free click conjugation with azide-containing partners through strain-promoted alkyne-azide cycloaddition (SPAAC).
- Contains two PEG4-NHS ester groups and a DBCO functional group.
- Enables protein modification through NHS-ester conjugation to primary amines.
- Supports copper-free SPAAC click chemistry with azide partners.
- Suitable for small-scale research use; available in 5 mg and larger sizes.
- Molecular weight 995.03; CAS number 2639395-38-1.
Medchemexpress LLC Azido-PEG6-NHS ester | 2055014-64-5 | MFCD22683276 | 98.0% | 476.48 g/mol | C19H32N4O10 | 25 MG
Azido-PEG6-NHS ester is a bifunctional PEG-based reagent containing an azide group for bioorthogonal click chemistry and an N-hydroxysuccinimide (NHS) ester for coupling to primary amines. It is commonly used as a linker in antibody-drug conjugate and PROTAC synthesis, and for general bioconjugation applications.
- Bifunctional: azide for CuAAC/SPAAC and NHS ester for amine coupling.
- PEG6 spacer improves solubility and reduces steric hindrance.
- High purity for reliable conjugation reactions.
- Suitable for ADC and PROTAC linker installation and bioconjugation workflows.
- Available in small-scale packaging compatible with research applications.
Medchemexpress LLC Heneicosaoxa PEG diacid bis(2,5-dioxo-1-pyrrolidinyl) ester | 2221948-98-5 | MFCD21363289 | 98.0% | 1237.34 g/mol | C54H96N2O29 | 100 MG
Bis-PEG21-NHS ester is a bifunctional polyethylene glycol (PEG)-based N-hydroxysuccinimide (NHS) ester linker used for amine conjugation in the synthesis of PROTACs and antibody-drug conjugates. It provides hydrophilicity and spacing between conjugated moieties.
- Bifunctional NHS ester for amine conjugation.
- PEG21 spacer provides hydrophilicity and flexibility.
- Suitable for PROTAC and ADC linker assembly.
- High purity: 98.0%.
- Molecular weight ~1237.34 g/mol.
- Solid powder; store powder at -20°C; in solvent store at -80°C (6 months) or -20°C (1 month).
- Available in lab-scale quantities such as 100 MG.
Medchemexpress LLC Mal-PEG6-NHS ester | 1599472-25-9 | MFCD20926374 | 98.0% | 530.52 g/mol | C23H34N2O12 | 5 G
Mal-PEG6-NHS ester is a non-cleavable linker containing a maleimide reactive group, a six-unit polyethylene glycol (PEG6) spacer, and an N-hydroxysuccinimide (NHS) ester for thiol and amine bioconjugation. Supplied as a solid with typical purity of 98.0%, it is used in antibody-drug conjugate and PROTAC linker synthesis and general bioconjugation workflows.
- Non-cleavable linker for stable bioconjugation.
- Maleimide group enables thiol-specific conjugation.
- NHS ester allows amine coupling.
- PEG6 spacer increases solubility and reduces aggregation.
- Typical purity 98.0%.
- Soluble in DMSO at 100 mg/mL; in vivo formulation protocols documented.
- Supplied as a 5 g pack for research use.
Medchemexpress LLC DOTA-NHS-ester | 170908-81-3 | >97.0% | 501.49 g/mol | C20H31N5O10 | 250 MG
DOTA-NHS-ester is an NHS-activated DOTA chelator used to conjugate the DOTA moiety to biomolecules (for example, peptides, proteins, and affibodies) to enable radiolabeling for PET, SPECT, and radiotherapeutic research. It is supplied as a white to off-white solid with high purity and is soluble in DMSO.
- NHS-activated DOTA chelator for amine conjugation.
- High purity (>97.0%).
- Molecular weight 501.49 g/mol; formula C20H31N5O10.
- Soluble in DMSO (50 mg/mL); ultrasonic assistance recommended.
- Storage: sealed, away from moisture; in solvent -80°C (6 months) or -20°C (1 month).
- Intended for radiolabeling research (PET/SPECT); not for human use.
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 IL-15 Human Biotin 10ug | 10ug
IL-15 protein regulates immune cells stimulates the proliferation of NK cells T cells and B cells and promotes cytokine secretion IL-15 Protein Human (Biotinylated HEK293 Fc-Avi) is the recombinant human-derived IL-15 protein expressed by HEK293 with C-Avi C-hFc labeled tag