Cyanine3 NHS ester

Cat. # Quantity Price Lead time
11020 1 mg $110.00 in stock
21020 5 mg $210.00 in stock
41020 25 mg $410.00 in stock
51020 50 mg $695.00 in stock
61020 100 mg $1190.00 in stock

Cyanine3 NHS ester is a reactive dye for the labeling of amino-groups in biomolecules, an analog of Cy3® NHS ester. This reagent is ideal for the labeling of soluble proteins, peptides, and oligonucleotides/DNA. For delicate proteins consider using water-soluble sulfo-Cyanine3 NHS ester which does not require use of any co-solvent.

Cyanine3 NHS ester is a replacement for NHS esters of Cy3®, Alexa Fluor 546, and DyLight 549.

Absorption and emission spectra of Cyanine3 fluorophore

Absorption and emission spectra of Cyanine3 fluorophore

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Alkyne hydrazide

Bifunctional reagent containing alkyne group and hydrazide function. It reacts with aldehydes and ketones. Alkyne group can then be coupled with various azides via CuAAC reaction.

General properties

Appearance: red powder
Mass spec M+ increment: 474.2
Molecular weight: 641.5
CAS number: 1032678-38-8, 1032815-92-1
Molecular formula: C34H40N3BF4O4
Solubility: soluble in organic solvents (DMF, DMSO, dichloromethane), insoluble in water
Quality control: NMR 1H and HPLC-MS (95+%)
Storage conditions: Storage: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
MSDS: Download

Spectral properties

Excitation maximum, nm: 555
ε, L⋅mol−1⋅cm−1: 150000
Emission maximum, nm: 570
Fluorescence quantum yield: 0.31
CF260: 0.04
CF280: 0.09

Product citations

  1. Smith, J.D.; Cardwell, L.N.; Porciani, D.; Nguyen, J.A.; Gallazzi, F.; Tata, R.R.; Burke, D.H.; Daniels, M.A.; Ulery, B. Aptamer-displaying peptide amphiphile micelles as a cell-targeted delivery vehicle of peptide cargoes. Physical Biology, in press. doi: 10.1088/1478-3975/aadb68
  2. Wu, B.; Zhang, H.; Sun, R.; Peng, S.; Cooperman, B.S.; Goldman, Y.E.; Chen, C. Translocation kinetics and structural dynamics of ribosomes are modulated by the conformational plasticity of downstream pseudoknots. Nucleic Acids Research, in press. doi: 10.1093/nar/gky636
  3. Ye, K.; Sinawang, P.D.; Yoong, A.T.I.; Marks, R.S. Photoinducible silane diazirine as an effective crosslinker in the construction of a chemiluminescent immunosensor targeting a model E. coli analyte. Sensors and Actuators B: Chemical, 2018, 256, 234–242. doi: 10.1016/j.snb.2017.10.058
  4. Delcanale, P.; Miret-Ontiveros, B.; Arista-Romero, M.; Pujals, S.; Albertazzi, L. Nanoscale Mapping Functional Sites on Nanoparticles by Points Accumulation for Imaging in Nanoscale Topography (PAINT). ACS Nano, 2018, 12(8), 7629–7637. doi: 10.1021/acsnano.7b09063
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