Cyanine3B NHS ester

Cat. # Quantity Price Lead time
19320 1 mg $140.00 in stock
29320 5 mg $340.00 in stock
49320 25 mg $990.00 in stock
59320 50 mg $1690.00 in stock
69320 100 mg please inquire in stock

Cyanine3B NHS ester is a reactive dye for the specific labeling of amino-groups in biomolecules — antibodies, peptides, or oligonucleotides. Cyanine3B is an improved version of yellow Cyanine3 dye with significantly increased fluorescence quantum yield and photostability.

Cyanine3B absorbance and emission spectra

Cyanine3B absorbance and emission spectra

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General properties

Appearance: dark red powder
Molecular weight: 657.75
Molecular formula: C35H35N3O8S
Solubility: good in DMF, DMSO
Quality control: NMR 1H and HPLC-MS (95+%)
Storage conditions: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Desiccate.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 566
ε, L⋅mol−1⋅cm−1: 137000
Emission maximum, nm: 578
Fluorescence quantum yield: 0.92
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