Cyanine3 NHS ester - ≥95% , CAS No.2632339-91-2

CAS: 2632339-91-2 Cat. No.: C276360 Molecular Weight: 641.5 PubChem CID: 91757880
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Synonyms
3H-​Indolium, 2-​[3-​(1,​3-​dihydro-​1,​3,​3-​trimethyl-​2H-​indol-​2-​ylidene)​-​1-​propen-​1-​yl]​-​1-​[6-​[(2,​5-​dioxo-​1-​pyrrolidinyl)​oxy]​-​6-​oxohexyl]​-​3,​3-​dimethyl-​, tetrafluoroborate | Cyanine3 NHS ester (BF4) | Cyanine3 NHS ester tetraflu
Storage
Protected from light,Store at -20°C,Desiccated
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1mg
C276360-1mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$70.90
5mg
C276360-5mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$251.90
25mg
C276360-25mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$605.90
100mg
C276360-100mg
1
$1,675.90
Enter a quantity for the sizes you want to add.
🧪

Why this grade

≥95% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Protected from light,Store at -20°C,Desiccated Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Spectral properties
Excitation/absorption 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

Specifications

Synonyms
3H-​Indolium, 2-​[3-​(1, ​3-​dihydro-​1, ​3, ​3-​trimethyl-​2H-​indol-​2-​ylidene)​-​1-​propen-​1-​yl]​-​1-​[6-​[(2, ​5-​dioxo-​1-​pyrrolidinyl)​oxy]​-​6-​oxohexyl]​-​3, ​3-​dimethyl-​, tetrafluoroborate | Cyanine3 NHS ester (BF4) | Cyanine3 NHS ester tetraflu
Specifications & Purity
≥95%
Biochemical and Physiological Mechanisms
Yellow emitting fluorescent dye for labeling amino-groups in biomolecules. Analog of Cy3 ® NHS ester. Ideal for labeling soluble proteins, peptides, and oligonucleotides/DNA.
Storage
Protected from light, Store at -20°C, Desiccated
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Note
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Refer to SDS for further information. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Purity
≥95%
Names and Identifiers
Pubchem Sid504772662
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504772662
Canonical Smiles[B-](F)(F)(F)F.CC1(C2=CC=CC=C2[N+](=C1C=CC=C3C(C4=CC=CC=C4N3CCCCCC(=O)ON5C(=O)CCC5=O)(C)C)C)C
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;tetrafluoroborate
InChIKeyIKCZEWWKZQLLCC-UHFFFAOYSA-N
INCHI1S/C34H40N3O4.BF4/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;2-1(3,4)5/h8-11,13-19H,6-7,12,20-23H2,1-5H3;/q+1;-1
Isomeric SMILES [B-](F)(F)(F)F.CC1(C2=CC=CC=C2[N+](=C1/C=C/C=C/3\C(C4=CC=CC=C4N3CCCCCC(=O)ON5C(=O)CCC5=O)(C)C)C)C
PubChem CID 91757880
Molecular Weight 641.5

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassIndoles and derivatives
SubclassIndoles
Intermediate Tree Nodes Not available
Direct Parent3-alkylindoles
Alternative Parents Tertiary alkylarylamines  Pyrrolidine-2-ones  Benzenoids  Dicarboximides  Lactams  Amino acids and derivatives  Propargyl-type 1,3-dipolar organic compounds  Organic metalloid salts  Monocarboxylic acids and derivatives  Enamines  Azacyclic compounds  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  Organic cations  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents 3-alkylindole - Tertiary aliphatic/aromatic amine - Pyrrolidone - 2-pyrrolidone - Benzenoid - Dicarboximide - Pyrrolidine - Amino acid or derivatives - Lactam - Tertiary amine - Organic 1,3-dipolar compound - Organic metalloid salt - Propargyl-type 1,3-dipolar organic compound - Azacycle - Carboxylic acid derivative - Enamine - Monocarboxylic acid or derivatives - Organic salt - Carbonyl group - Organooxygen compound - Organonitrogen compound - Organic oxygen compound - Amine - Organic oxide - Organic nitrogen compound - Hydrocarbon derivative - Organic cation - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as 3-alkylindoles. These are compounds containing an indole moiety that carries an alkyl chain at the 3-position.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

9 results found

Lot NumberCertificate TypeDateItem
G2523095Certificate of AnalysisMay 09, 2026 C276360
E2521105Certificate of AnalysisMar 11, 2026 C276360
E2521106Certificate of AnalysisMar 11, 2026 C276360
A2616136Certificate of AnalysisMay 12, 2025 C276360
E2521103Certificate of AnalysisMay 12, 2025 C276360
E2521104Certificate of AnalysisMay 12, 2025 C276360
L2214762Certificate of AnalysisSep 22, 2023 C276360
L2214778Certificate of AnalysisSep 22, 2023 C276360
L2214786Certificate of AnalysisSep 22, 2023 C276360
Chemical and Physical Properties
SolubilitySoluble in DMSO
Sensitivitylight sensitive
Documents & Articles
Solution Calculators
Reviews

Customer Reviews

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