Cyanine3B NHS ester

NHS esters Cyanine3B Protein labeling

Cat. #	Quantity	Price	Lead time
19320	1 mg	$140	in stock
29320	5 mg	$340	in stock
49320	25 mg	$990	in stock
59320	50 mg	$1690	in stock
69320	100 mg	$3100	in stock

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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.

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Cyanine3B absorbance and emission spectra

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General properties

Appearance:	dark red powder
Molecular weight:	657.75
CAS number:	228272-52-4
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:	559
ε, L⋅mol⁻¹⋅cm⁻¹:	121000
Emission maximum, nm:	571
Fluorescence quantum yield:	0.68
CF₂₆₀:	0.044
CF₂₈₀:	0.077

This Product is offered and sold for research purposes only. It has not been tested for safety and efficacy in food, drug, medical device, cosmetic, commercial or any other use. Supply does not express or imply authorization to use for any other purpose, including, without limitation, in vitro diagnostic purposes, in the manufacture of food or pharmaceutical products, in medical devices or in cosmetic products.