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146368-14-1

146368-14-1 Structure

146368-14-1 Structure
IdentificationBack Directory
[Name]

CY5 NHS ESTER
[CAS]

146368-14-1
[Synonyms]

CY6-SE
Cy5-SE
CY 5-NHS
SULFO-CY5
Sulfo-Cy5-SE
CY5 NHS ESTER
CAS_146368-14-1
Cyanine5 NHS ester
Sulfo-Cy5-SE, >95%
Sulfo-Cy5 NHS ester
CY5 NHS ESTER,Cy5-SE
Cy5-succinimidyl ester
Cyanine 5 monosuccinimidyl ester
Sulfo-Cyanine5 Succinimidyl Ester
Sulfo-Cy5-succinimidyl ester, 95%
Cyanine 5 monosuccinimidyl ester [equivalent to Cy5 NHS ester]
2-(5-(1-(6-((2,5-Dioxopyrrolidin-1-yl)oxy)-6-oxohexyl)-3,3-dimethyl-5-sulfoindolin-2-ylidene)penta-1,3-dien-1-yl)-1-ethyl-3,3-dimethyl-3H-indol-1-ium-5-sulfonate
2-((1E,3E,5Z)-5-(1-(6-((2,5-Dioxopyrrolidin-1-yl)oxy)-6-oxohexyl)-3,3-dimethyl-5-(sulfinooxy)indolin-2-ylidene)penta-1,3-dien-1-yl)-1-ethyl-3,3-dimethyl-3H-indol-1-ium-5-sulfonate
2-[5-[1-[6-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-6-oxohexyl]-1,3-dihydro-3,3-dimethyl-5-sulfo-2H-indol-2-ylidene]-1,3-pentadien-1-yl]-1-ethyl-3,3-dimethyl-5-sulfo-3H-indolium, inner salt
3H-Indolium, 2-[5-[1-[6-[(2,5-dioxo-1-pyrrolidinyl)oxy]-6-oxohexyl]-1,3-dihydro-3,3-dimethyl-5-sulfo-2H-indol-2-ylidene]-1,3-pentadien-1-yl]-1-ethyl-3,3-dimethyl-5-sulfo-, inner salt
[Molecular Formula]

C37H42KN3O10S2
[MDL Number]

MFCD03846173
[MOL File]

146368-14-1.mol
[Molecular Weight]

753.88
Chemical PropertiesBack Directory
[storage temp. ]

Keep in dark place,Inert atmosphere,Store in freezer, under -20°C
[solubility ]

Methanol (Slightly), Water (Slightly)
[form ]

Solid
[color ]

Dark Purple to Very Dark Purple
[Appearance]

Dark blue solid
[ex/em]

649/672 nm (PBS buffer)
[ε(extinction coefficient)]

271000 L⋅mol−1⋅cm−1
[Φ(quantum yield)]

0.28
[Stability:]

Moisture Sensitive
[InChIKey]

WXWLHDCCGVWTDZ-UHFFFAOYSA-N
[SMILES]

C(N1C(C(C)(C)C2=CC(S(O)(=O)=O)=CC=C12)=CC=CC=CC1C(C2=CC(S([O-])(=O)=O)=CC=C2[N+]=1CC)(C)C)CCCCC(=O)ON1C(CCC1=O)=O
Safety DataBack Directory
[Symbol(GHS) ]

Exclamation Mark (GHS07)
GHS07
[Signal word ]

Warning
[Hazard statements ]

H302-H317
[Precautionary statements ]

P280
[HS Code ]

29339900
Questions And AnswerBack Directory
[Purity]

98% HPLC
Hazard InformationBack Directory
[Description]

During the last years, Cyanine5 (an analog of Cy5®) has become an incredibly popular label in life science research and diagnostics. The fluorophore has its emission maximum in the red region, where many CCD detectors exhibit maximum sensitivity, and biological objects show low background. The dye color is very intense, therefore quantities as small as 1 nmol can be detected in gel electrophoresis by naked eye.


This Cyanine5 NHS ester (analog to Cy5® NHS ester) is a reactive dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides. This dye requires a small amount of organic co-solvent (such as DMF or DMSO) to be used in labeling reactions (please see our recommended protocol for more details). This reagent is ideal for very cost-efficient labeling of soluble proteins as well as all kinds of peptides and oligonucleotides. This reagent also works well in organic solvents for small molecule labeling. For more sophisticated targets such as easily degradable proteins, when the use of DMF or DMSO is undesirable, consider using water-soluble sulfo-Cyanine 5 NHS ester which does not require any co-solvent, and features very similar fluorescent properties.


Cyanine5 fluorophore is compatible with various instrumentation including many fluorescent microscopes, imagers, scanners, and fluorescence readers. A number of various Cyanine5 analogs exist - Cyanine5 NHS ester can replace activated esters of Cy5® and DyLight 649.

[Chemical Properties]

Appearance: Dark blue solid
ex/em: 649/672 nm (PBS buffer)
Extinction coefficient (ε): 271000 L??mol??1??cm??1
Quantum yield (Φ): 0.28
[Uses]

Cy5-NHS ester can be used toward targeted ultrasound-assisted cancer-selective chemical labeling and cancer imaging. It can also be used for multipotent protein activation.
[Chemical Reactivity]

Primary amine
[storage]

Store at -20°C
[Abs/Em Maxima]

646/662 nm
[Fluoresene quantum yield]

0.2
[Extinction Coefficient]

250000
[CF260]

0.03
[CF280]

0.04
[Spectrally Similar Dyes]

Alexa Fluor® 647, DyLight® 649,
Spectrum DetailBack Directory
[Spectrum Detail]

CY5 NHS ESTER(146368-14-1)1HNMR
146368-14-1 suppliers list
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