Biotin and derivatives
Medchemexpress LLC Sulfo-Cy7.5 NHS ester | 2736437-44-6 | 97.0% | 1104.29 g/mol | C49H48K3N3O16S4 | 10 MG
Sulfo-Cy7.5 NHS ester is a water-soluble, hydrophilic near-infrared cyanine dye functionalized as an N-hydroxysuccinimide (NHS) ester for covalent labeling of primary amines on proteins, peptides, and other biomolecules.
- Near-infrared, water-soluble cyanine dye suitable for NIR imaging and fluorescence labeling.
- Reactive NHS ester for efficient covalent coupling to primary amines under mild conditions.
- Reported molecular weight of 1104.29 g/mol for planning conjugation ratios.
- High reported purity suitable for research applications and labeling workflows.
- Available in small milligram pack sizes for pilot studies and labeling optimization.
- Store sealed, away from moisture and light to maintain stability.
Medchemexpress LLC AF647-NHS ester (triTEA) | 407627-61-6 | 99.7% | 10 MG
AF647-NHS ester (triTEA) is a far-red fluorescent NHS ester reagent used to label primary amines for fluorescence detection. Supplied as a purple solid, it is optimized for conventional and instantaneous detection and is soluble in DMSO when warmed or sonicated.
- Far-red fluorescent NHS ester for amine conjugation.
- Excitation: 635 nm (conventional) / 620 nm (instantaneous).
- Physical form: purple to dark purple solid.
- Purity: 99.74% as reported by manufacturer.
- Solubility: DMSO 20 mg/mL; use freshly opened DMSO and apply ultrasonic/heat to 60°C as needed.
- Storage: protect from light and store under nitrogen; in solvent: -80°C (6 months), -20°C (1 month).
- For research use only; not for patient use.
Medchemexpress LLC Bis-PEG6-NHS ester | 1526718-98-8 | 98.0% | 576.55 g/mol | C24H36N2O14 | 50 MG
Bis-PEG6-NHS ester is a PEG-based bifunctional linker bearing two N-hydroxysuccinimide (NHS) ester termini separated by a six-unit polyethylene glycol spacer. It is used to conjugate amine-containing ligands in the synthesis of PROTACs and as a cleavable linker for antibody-drug conjugates (ADCs).
- High purity (98.0%).
- Two NHS ester termini for efficient amine coupling.
- PEG6 spacer provides aqueous solubility and conformational flexibility.
- Suitable as a cleavable linker in ADC construction and for PROTAC linker design.
- Store sealed at -20 °C, away from moisture; unstable in solution, prepare fresh as needed.
eMolecules Hydroxy-PEG11-t-butyl ester | | MFCD29049421 | 1g
Broadpharm | Hydroxy-PEG11-t-butyl ester | 1g | 490840967 | BP-24413 | 98.000 | | MFCD29049421 | 630.769 | C29H58O14
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