Description

3H-Indolium, 2-[5-(1-Ethyl-1,3-Dihydro-3,3-Dimethyl-2H-Indol-2-Ylidene)-1,3-Pentadien-1-Yl]-1-Hexyl-3,3-Dimethyl- is a high-purity cyanine dye intermediate, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound is essential for synthesizing advanced functional dyes and pigments with specific photophysical characteristics. It is primarily needed by manufacturers in the optical data storage, biomedical imaging, and specialty chemical sectors for developing next-generation materials.

Application

• NIR-Absorbing Dye Synthesis: A key building block for creating cyanine dyes used in optical filters, laser applications, and security inks.
• Fluorescent Probe Development: Serves as a precursor for labeling agents and probes in bioimaging and diagnostic assays.
• Photodynamic Therapy (PDT) Agents: Used in the research and development of photosensitizers for medical treatments.
• Non-Linear Optical Materials: A critical intermediate for materials used in telecommunications and photonic devices.
• Industrial Pigments: Employed in the formulation of high-performance pigments for specialized coatings and plastics.
• Academic & Industrial Research: A valuable reagent for R&D in photochemistry and material science.

Basic Information

Product Name	3H-Indolium, 2-[5-(1-Ethyl-1,3-Dihydro-3,3-Dimethyl-2H-Indol-2-Ylidene)-1,3-Pentadien-1-Yl]-1-Hexyl-3,3-Dimethyl-
CAS No.	156189-40-1
Molecular Formula	C34H45N2+
Molecular Weight	481.74 g/mol
Synonyms	1-Hexyl-2-[5-(1-ethyl-3,3-dimethylindolin-2-ylidene)penta-1,3-dien-1-yl]-3,3-dimethyl-3H-indolium; Cyanine dye intermediate IR-786 related; 2-[5-(1-Ethyl-3,3-dimethylindolin-2-ylidene)penta-1,3-dien-1-yl]-1-hexyl-3,3-dimethyl-3H-indolium; Heptamethine cyanine dye precursor; NIR dye intermediate; 1-Hexyl-3,3-dimethyl-2-[5-(1-ethyl-3,3-dimethyl-2-indolinylidene)-1,3-pentadienyl]-3H-indolium
EINECS	Contact for details

Quality Control

Our production of this cyanine dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high chemical purity. Every lot is analyzed using advanced chromatographic and spectroscopic techniques, including HPLC and NMR, to verify identity and purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed in a dry environment to prevent moisture absorption, which can affect stability and performance. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%

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