Cyanine3 NHS ester

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Cyanine3 NHS ester

Cyanine3 NHS ester

Catalog Number R01-0016
Category NHS Esters
Molecular Formula C34H40N3BF4O4
Molecular Weight 641.5
Catalog Number Size Price Quantity
R01-0016 -- $--

Product Introduction

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.

Chemical Information

Related CAS 1393427-85-4 (without anion)
Synonyms Cy3 NHS ester; 2-((E)-3-((E)-1-(6-((2,5-dioxopyrrolidin-1-yl)oxy)-6-oxohexyl)-3,3-dimethylindolin-2-ylidene)prop-1-en-1-yl)-1,3,3-trimethyl-3H-indol-1-ium chloride
Purity NMR 1H and HPLC-MS (95+%)
IUPAC Name (2,5-dioxopyrrolidin-1-yl) 6-[(2E)-3,3-dimethyl-2-[(E)-3-(1,3,3-trimethylindol-1-ium-2-yl)prop-2-enylidene]indol-1-yl]hexanoate;chloride
Canonical SMILES CC1(C2=CC=CC=C2[N+](=C1C=CC=C3C(C4=CC=CC=C4N3CCCCCC(=O)ON5C(=O)CCC5=O)(C)C)C)C.[Cl-]
InChI InChI=1S/C34H40N3O4.ClH/c1-33(2)24-14-8-10-16-26(24)35(5)28(33)18-13-19-29-34(3,4)25-15-9-11-17-27(25)36(29)23-12-6-7-20-32(40)41-37-30(38)21-22-31(37)39;/h8-11,13-19H,6-7,12,20-23H2,1-5H3;1H/q+1;/p-1
InChI Key KWDMHANYPGHTLW-UHFFFAOYSA-M
Solubility poorly soluble in water (2.3 mM = 1.5 g/L), soluble in organic solvents (DMF, DMSO, dichloromethane)
Appearance red powder
  • Product Specification
ε, L⋅mol-1⋅cm-1 150000
Fluorescence Quantum Yield 0.31
Excitation 555
Emission 570

Computed Properties

Hydrogen Bond Donor Count 0
Hydrogen Bond Acceptor Count 6
Rotatable Bond Count 10
Exact Mass 589.2707345 g/mol
Monoisotopic Mass 589.2707345 g/mol
Topological Polar Surface Area 69.9Ų
Heavy Atom Count 42
Formal Charge 0
Complexity 1120
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 2
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 2
Compound Is Canonicalized Yes
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