Biotin and derivatives
Apexbio Technology LLC NHS-SS-11-Biotin(Synonyms: Sulfo-NHS-SS-Biotin, EZ-Link NHS-SS-Biotin, NHS-SS-D-Biotin, N-Hydroxysuccinimidyl-SS-Biotin), 25mg, CAS: 142439-92-7.
NHS-SS-11-Biotin (CAS 142439-92-7) is an amine-reactive biotinylation reagent commonly used in biochemical research Structurally it possesses an N-hydroxysuccinimide (NHS) ester group that covalently reacts with primary amines of target proteins or biomolecules forming stable amide bonds and releasing sulfo-NHS This reagent features a cleavable disulfide linker and an extended spacer arm of approximately 24 3 enhancing probe accessibility to avidin or streptavidin conjugates It is utilized extensively for reversible biotinylation affinity purification or labeling studies in proteomics and cell biology applications
Medchemexpress LLC Iodoacetyl-LC-biotin | 93285-75-7 | MFCD00054987 | 99.2% | 510.43 g/mol | C18H31IN4O3S | 5 MG
Iodoacetyl-LC-biotin is a thiol-reactive, biotinylated electrophile reagent used for site-specific labeling and enrichment of cysteine-containing proteins. It reacts with sulfhydryl groups to form stable thioether bonds, enabling affinity capture and detection in proteomics and biochemical assays.
- Thiol-specific labeling of cysteine residues for targeted modification.
- Forms stable thioether bonds for irreversible protein labeling.
- Enables affinity enrichment and sensitive detection of modified proteins.
- Compatible with proteomics workflows and subcellular proteome analysis.
- Supplied as a solid with high purity for research applications.
Research Products International Corp D Biotin 5 G
CAS Number: 58-85-5
Molecular Formula: C10H16N2O3S
Molecular Weight: 244.3
TARGETMOL CHEMICALS INC Biotin-PEG12-NHS ester 50MG
Also available in 1 mL, 5 mg, 10 mg, 25 mg, 100 mg, 200 mg and bulk. Please contact Fisher for quotes. Biotin-PEG12-NHS ester is a PEG-based PROTAC linker used in the synthesis of PROTACs. Purity ≥98%
Chem-Impex International, Inc. Biotin p-nitrophenyl ester | MFCD15141972 | 1G
Biotin p-nitrophenyl ester, MFCD15141972, 1G
Medchemexpress LLC M-PEG-NHS ester | 92451-01-9 | MFCD01867746 | 98.0% | 2000 (average) | (C2H4O)nC7H9NO5 | 100 MG
m-PEG-NHS ester (MW 2000) is an NHS-activated methoxy poly(ethylene glycol) reagent for PEGylation of biomolecules. It reacts with primary amines to modify proteins, peptides, and small molecules to improve solubility, stability, and pharmacokinetics. Supplied as a white to off-white solid for research use, it is offered in multiple pack sizes and stored sealed away from moisture.
Medchemexpress LLC m-PEG-NHS ester | 92451-01-9 | MFCD06412227 | 98.0% | 2,000 Da | C9H13NO6 | 500 MG
m-PEG-NHS ester is a methoxy-terminated polyethylene glycol reagent functionalized with an N-hydroxysuccinimide (NHS) ester for selective conjugation to primary amines. With an average molecular weight of approximately 2,000 Da, it is used to introduce PEG chains that improve solubility, stability, and circulation time of proteins, peptides, and small molecules. Supplied as a 500 mg solid.
- Methoxy-terminated PEG with NHS ester reactive group.
- Average molecular weight ~2,000 Da for spacer and solubility enhancement.
- High purity suitable for bioconjugation (reported 98.0%).
- Reacts selectively with primary amines to form stable amide linkages.
- Commonly used for PEGylation, linker construction, and bioconjugation.