ChemicalBook >> CAS DataBase List >>Cy3

Cy3

CAS No.
146397-20-8
Chemical Name:
Cy3
Synonyms
Cy3;Cy 3 acid;Cy3 DiSE(DiSO3);Cy 3 Non-Sulfonated;Sulfo Cy3-DiNHS ester;Sulfo-Cyanine3 DiNHS ester;Cy3-E Free Acid (Orange Red);Cy3-bifunctional dye zwitterion;Cy3 DiSE(DiSO3) sulfo Cy3 diSE.TEA;2-((1E,3E)-3-(1-(5-Carboxypentyl)-3,3-diMethylindolin-2-ylidene)prop-1-enyl)-1-ethyl-3,3-diMethyl-3H-indoliuM chloride
CBNumber:
CB91401142
Molecular Formula:
C31H39ClN2O2
Molecular Weight:
507.10656
MDL Number:
MFCD31630712
MOL File:
146397-20-8.mol
Last updated:2025-08-05 17:23:01

Cy3 Properties

storage temp. under inert gas (nitrogen or Argon) at 2-8°C
solubility Water, DMSO, DMF
InChIKey OHOQEZWSNFNUSY-UHFFFAOYSA-N
SMILES [N+]1(CCCCCC(ON2C(=O)CCC2=O)=O)C2=C(C=C(S([O-])(=O)=O)C=C2)C(C)(C)C=1C=CC=C1C(C)(C)C2=C(N1CCCCCC(ON1C(=O)CCC1=O)=O)C=CC(S(O)(=O)=O)=C2

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P261-P305+P351+P338

Cy3 price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TRC C951300 CY3 146397-20-8 1mg $1845 2021-12-16 Buy
Crysdot CD11253148 Cy3 97% 146397-20-8 100mg $895 2021-12-16 Buy
Product number Packaging Price Buy
C951300 1mg $1845 Buy
CD11253148 100mg $895 Buy

Cy3 Chemical Properties,Uses,Production

Description

Cy3 Acid (also sold under Sulfo-Cyanine3 Acid) is a bright, water-soluble, and pH insensitive> from pH 4 to pH 10 orange-fluorescent dye. Cy3 conjugates of antibodies, peptides, and proteins can be excited using the 532 nm or 555 nm laser line and visualized with TRITC (tetramethylrhodamine) filter sets. Cy3 conjugates give less background than TAMRA and most other commonly used fluorescent dyes.The carboxylic acid of Cy3 dye is a reagent of choice for the preparation of custom activated esters that often are not commercially available. Examples of such activated esters include sulfo-NHS, TFP (2,3,5,6-Tetrafluorophenol), STP (4-Sulfo-2,3,5,6-Tetrafluorophenol, Sodium Salt). Another common application for non-activated carboxylic acid is peptide modification during solid phase synthesis, which usually requires in-situ activation with peptide coupling regents, for example HATU. Cy3 Acid is also often used for control experiments, and for calibration.

Uses

CY3 is an amine reactive water soluble fluorescent dye.

Definition

ChEBI: Cy3-bifunctional dye zwitterion is a Cy3 dye and an iminium betaine. It is a conjugate acid of a Cy3-bifunctional dye(1-).

Chemical Reactivity

Non-activated

Abs/Em Maxima

555/572 nm

Extinction Coefficient

150,000 cm-1M-1

Spectrally Similar Dyes

Cy3, DyLight® 555, Alexa Fluor® 555

Cy3 Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 94)Suppliers
Supplier Tel Email Country ProdList Advantage
ATK CHEMICAL COMPANY LIMITED
+undefined-21-51877795 ivan@atkchemical.com China 33024 60
Zhengzhou Alfa Chemical Co.,Ltd
+8618530059196 sale04@alfachem.cn China 12177 58
TargetMol Chemicals Inc.
+1-781-999-5354; +17819995354 marketing@targetmol.com United States 32432 58
HANGZHOU CLAP TECHNOLOGY CO.,LTD
86-571-88216897,88216896 13588875226 sales@hzclap.com CHINA 6312 58
Hefei Hirisun Pharmatech Co., Ltd
+8615056975894 shawn@hirisunpharm.com CHINA 9911 58
Nextpeptide Inc
+86-0571-81612335 +8613336028439 sales@nextpeptide.com China 19908 58
SUZHOU SENFEIDA CHEMICAL CO.,LTD
+86-0512-83500002 +8618662433356 3899766280@qq.com China 26362 58
HANGZHOU LEAP CHEM CO., LTD.
+86-571-87711850 market18@leapchem.com China 43339 58
Nanjing Bioorth Biotech Co. Ltd 18168058751 bioorth@163.com China 43 58
Nanjing Pusheng Biomedical Technology Co., Ltd 02557628056 15150681880 order@pushengmedical.com China 267 58
Cy3 2-((1E,3E)-3-(1-(5-Carboxypentyl)-3,3-diMethylindolin-2-ylidene)prop-1-enyl)-1-ethyl-3,3-diMethyl-3H-indoliuM chloride Cy3 DiSE(DiSO3) Cy 3 acid Cy3-bifunctional dye zwitterion Sulfo-Cyanine3 DiNHS ester Cy 3 Non-Sulfonated Cy3 DiSE(DiSO3) sulfo Cy3 diSE.TEA Sulfo Cy3-DiNHS ester 1-[6-(2,5-dioxopyrrolidin-1-yl)oxy-6-oxohexyl]-2-[(E,3E)-3-[1-[6-(2,5-dioxopyrrolidin-1-yl)oxy-6-oxohexyl]-3,3-dimethyl-5-sulfoindol-2-ylidene]prop-1-enyl]-3,3-dimethylindol-1-ium-5-sulfonate Cy3-E Free Acid (Orange Red) 146397-20-8 C43H50N4O14S2