Description

3H-Indolium, 2-[3-[1-(5-Carboxypentyl)-1,3-Dihydro-3,3-Dimethyl-2H-Indol-2-Ylidene]-1-Propen-1-Yl]-1,3,3-Trimethyl-, Inner Salt is a specialized cyanine dye derivative, recognized for its excellent photophysical properties and structural versatility. This compound is engineered to serve as a high-performance functional dye and a critical building block in advanced material synthesis. It is primarily utilized by researchers and manufacturers in the biotechnology, analytical chemistry, and advanced materials sectors for developing next-generation optical applications.

Application

• Fluorescent Labeling Reagent: Used as a near-infrared (NIR) or visible-light fluorophore for labeling biomolecules (proteins, nucleic acids) in bioassays and diagnostics.
• Optical Sensor Development: A key component in the fabrication of chemical sensors and biosensors due to its solvatochromic or ion-sensitive fluorescence properties.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer for targeted cancer therapies and antimicrobial treatments.
• Non-Linear Optical (NLO) Materials: Incorporated into polymers and crystals for applications in photonics, optical data storage, and laser technology.
• Dye-Sensitized Solar Cells (DSSCs): Functions as a light-harvesting sensitizer to improve the efficiency of photovoltaic devices.
• Professional Imaging and Staining: Employed in specialized microscopy and histology for high-contrast cellular and tissue imaging.

Basic Information

Product Name	3H-Indolium, 2-[3-[1-(5-Carboxypentyl)-1,3-Dihydro-3,3-Dimethyl-2H-Indol-2-Ylidene]-1-Propen-1-Yl]-1,3,3-Trimethyl-, Inner Salt
CAS No.	1361402-15-4
Molecular Formula	C33H42N2O2
Molecular Weight	498.70 g/mol
Synonyms	Cy5 carboxylic acid derivative; Heptamethine cyanine dye acid; Carboxy-functionalized Cy5; 1-(5-Carboxypentyl)-2-[3-(1,3,3-trimethyl-3H-indol-1-ium-2-yl)prop-1-en-1-yl]-3,3-dimethyl-3H-indol-1-ium; Inner salt of indolenine cyanine dye; NIR dye acid; Biofunctional cyanine dye; Lipophilic cationic dye
EINECS	Contact for details

Quality Control

Our production of this high-purity functional dye adheres to strict quality management protocols. Each batch is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry to ensure structural integrity and purity. Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are provided with every shipment. We support cGMP-compliant manufacturing for research and diagnostic applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is light-sensitive; prolonged exposure to light should be avoided to prevent degradation. Keep the container sealed in a desiccated environment to maintain stability.

Specification

Item	Specification
Appearance	Dark green to blue-green solid
Identification (HPLC)	Conforms to reference standard
Identification (NMR)	Conforms to structure
Purity (HPLC, Area %)	≥ 95.0%
Loss on Drying	≤ 2.0 %
Residue on Ignition	≤ 0.5 %
Absorption λmax	Contact for details
Emission λmax	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.