Cyanine3B NHS ester

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
Found better price? Let us know and we will propose the way forward!

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

Customers also purchased with this product

AF 343 (Coumarin)-X-NHS ester

AF 343 (Coumarin) is a blue emitting dye that can serve as a FRET donor for fluorescein (FAM). This structure features a linker between Coumarin 343 fluorophore, and the functional group. It provides better solubility, and spatial separation between the dye, and the functional group.

AF 594 NHS ester

Red-fluorescent NHS-ester of AF 594 dye for labeling proteins, peptides, antibodies, and any molecules containing an -NH2 group. Pure 5-isomer

sulfo-Cyanine5 amine

Sulfonated Cyanine5 amine derivative for the conjugation with electrophiles and enzymatic transamination labeling.

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
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.