Biotin and derivatives
Medchemexpress LLC Endo-BCN-NHS carbonate | 1426827-79-3 | MFCD19705416 | 99.5% | 291.30 g/mol | C15H17NO5 | 1 G
endo-BCN-NHS carbonate is an NHS carbonate reagent that installs a bicyclo[6.1.0]non-4-ynyl (BCN) strained alkyne onto primary amines, forming carbamate linkages. The BCN handle enables copper-free strain-promoted azide-alkyne cycloaddition (SPAAC) for efficient bioconjugation of proteins, peptides, and polymers, and is commonly used to functionalize biomolecules for hydrogel cross-linking and cell-encapsulation studies.
- Reacts with primary amines to form stable carbamate linkages.
- Provides a strained alkyne handle for copper-free SPAAC bioconjugation.
- Enables efficient functionalization of proteins, peptides, and polymers.
- Facilitates hydrogel cross-linking and cell encapsulation applications.
- Supplied as a high-purity solid suitable for research use.
Medchemexpress LLC Biotin-PEG-biotin | 194920-55-3 | 99.3% | C26H44N6O6S2 | 10MG
Biotin-PEG-Biotin is a biotin-terminated polyethylene glycol (PEG) linker designed for use in PROTAC assembly and biotin-based affinity workflows. It provides dual biotin handles separated by a flexible PEG spacer, enabling conjugation, capture, and detection applications.
- Biotinylated at both ends for affinity capture and pull-down workflows.
- Peg spacer provides flexibility and improved solubility in polar organic solvents.
- High purity for research applications - 99.3%.
- Soluble in DMSO (~175 mg/mL); ultrasonic treatment may aid dissolution.
- Store protected from light and under inert atmosphere; follow cold storage guidance.
Apexbio Technology LLC 5-Carboxyfluorescein diacetate N-succinimidyl ester 150206-05-6 10mg
5-Carboxyfluorescein diacetate N-succinimidyl ester (CAS 150206-05-6) is a fluorescent cell-permeable dye It is designed to enable stable cell labeling by facilitating intracellular conversion and covalent attachment to cellular amines 5-Carboxyfluorescein diacetate N-succinimidyl ester exerts its activity through membrane permeation intracellular esterase-mediated cleavage of acetate groups and subsequent covalent coupling to intracellular targets resulting in persistent fluorescence through cell division Based on these properties 5-Carboxyfluorescein diacetate N-succinimidyl ester holds research potential in tracking lymphocyte migration analyzing cell proliferation and investigating cell dynamics and interactions in various in vitro and in vivo experimental models
Chem-Impex International, Inc. (+)-Biotinamidocaproyl hydrazide | MFCD00077659 | 50MG
(+)-Biotinamidocaproyl hydrazide, MFCD00077659, 50MG
Medchemexpress LLC Bis-SS-C3-NHS ester | 98604-88-7 | 98.0% | 432.47 g/mol | C16H20N2O8S2 | 100 MG
Bis-SS-C3-NHS ester is a cleavable antibody-drug conjugate (ADC) linker containing a disulfide-based spacer and N-hydroxysuccinimide (NHS) ester reactive groups for amine coupling. It is used to attach cytotoxic payloads to antibodies and enable controlled payload release inside target cells.
- Molecular formula: C16H20N2O8S2.
- Molecular weight: 432.47 g/mol.
- Cas number: 98604-88-7.
- Purity: 98.0%.
- Appearance: white to off-white solid.
- Storage: in solvent, -80°C for up to 6 months; -20°C for up to 1 month; store sealed and away from moisture.
- Available in multiple sizes, including 100 mg, for research use.
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