Biotin and derivatives
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Medchemexpress LLC NOTA-NHS ester | 1338231-09-6 | MFCD30747764 | ≥97.0% | 400.38 g/mol | C16H24N4O8 | 25 MG
NOTA-NHS ester is a bifunctional chelator derivative used for fluorescent labeling and radiolabeling (radionuclide-drug conjugates). It contains an activated N-hydroxysuccinimide (NHS) ester for conjugation to primary amines and a NOTA chelator for radiometal coordination. Supplied for research use only.
- Activated N-hydroxysuccinimide (NHS) ester for conjugation to primary amines.
- NOTA chelator for stable binding of radiometals.
- Purity ≥97.0%.
- CAS number 1338231-09-6.
- Molecular formula C16H24N4O8; molecular weight 400.38 g/mol.
- Recommended storage: powder -20°C; in solvent -80°C (6 months) or -20°C (1 month).
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Medchemexpress LLC L-biotin | 21788-37-4 | 99.7% | 244.31 | C10H16N2O3S | 25 MG
L-biotin is the unnatural enantiomer of biotin and is used as a biochemical research reagent. It is provided as a white to off-white solid with reported high purity and has been observed to bind streptavidin in laboratory assays.
- High purity suitable for research applications.
- White to off-white solid, easy to handle and store.
- Soluble in DMSO at high concentration for in vitro use.
- Available in small solid quantities appropriate for bench-scale experiments.
- Stable when stored frozen as a powder to extend shelf life.
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