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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 91827770Generated: November 3, 2026

2-(3-(1-(5-Carboxypentyl)-3,3-dimethyl-5-sulfoindolin-2-ylidene)prop-1-en-1-yl)-1-ethyl-3,3-dimethyl-3H-indol-1-ium-5-sulfonate

Cy3-COOH · Sulfo-Cy3 · Sulfo-Cyanine3 · CY3 (Sulfo-Cyanine3) · Cy4 · CY.3.29 · Cy3, >97% · TJ-Cy3-COOH

https://huagongshe.com/en/chemical/91827770

2-(3-(1-(5-Carboxypentyl)-3,3-dimethyl-5-sulfoindolin-2-ylidene)prop-1-en-1-yl)-1-ethyl-3,3-dimethyl-3H-indol-1-ium-5-sulfonate molecular structure

Identifiers & Physical Properties

CAS No.146368-13-0
Molecular formulaC31H38N2O8S2
Average molar mass630.8 g/mol
Monoisotopic mass630.20695852 g/mol
SMILESCCN1/C(=C/C=C/C2=[N+](CCCCCC(=O)O)c3ccc(S(=O)(=O)O)cc3C2(C)C)C(C)(C)c2cc(S(=O)(=O)[O-])ccc21
InChIKeyYDNYBBRGPORVRT-UHFFFAOYSA-N
PubChem CID91827770

Chemical & Physical Properties

XLogP3.9
Topological polar surface area172
Hydrogen bond donors2
Hydrogen bond acceptors9
Rotatable bonds10
Heavy atoms43
Formal charge0
Complexity1,360
Storage conditionsunder inert gas (nitrogen or Argon) at 2-8°C
SolubilityDMF: 10 mg/mlDMSO: 15 mg/mlEthanol: 1 mg/mlPBS (pH 7.2): 5 mg/ml
Physical stateA crystalline solid
ColorPurple to purplish red
ex/emλex 549, 548, 547 nmλem 554 nm in Phspe Buffer System
InChIKeyYDNYBBRGPORVRT-UHFFFAOYSA-N
SMILESC(N1C(C(C)(C)C2C=C(S(O)(=O)=O)C=CC1=2)=CC=CC1C(C2C=C(S([O-])(=O)=O)C=CC=2[N+]=1CC)(C)C)CCCCC(=O)O
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH302-H317
GHS precautionary statementsP280
Customs code29339900

Safety & Regulations

Customs code29339900
Signal wordWarning
GHS pictogramGHS07
GHS hazard statementsH302-H317
GHS precautionary statementsP280

Applications & Uses

Uses

Didesulfo Cyanine 3 Monofunctional Hexanoic Acid Dye is a light sensitive compound related to Cyanine 3 Monofunctional Hexanoic Acid Dye, Potassium Salt and its free acid (CAS# 146368-13-0), which is useful in the preparation of dUTPs conjugated with zwitterionic Cy3 or Cy5 fluorophore analogs for use as substrates for DNA amplification and labelling by Taq polymerase.