Description

2-[5-(1,3-Dihydro-1,3,3-Trimethyl-2H-Indol-2-Ylidene)-1,3-Pentadien-1-Yl]-1,3,3-Trimethyl-3H-Indolium Chloride is a high-purity cyanine dye intermediate essential for advanced material science and life sciences research. This compound serves as a critical building block for synthesizing near-infrared (NIR) fluorescent probes and sensitizers due to its excellent photophysical properties. It is primarily sought after by manufacturers and R&D laboratories in the photographic, optical data storage, and biomedical imaging sectors for developing next-generation functional materials.

Application

• NIR Fluorescent Dye Synthesis: A key precursor for creating heptamethine cyanine dyes used in bioimaging and diagnostic assays.
• Optical Recording Media: Employed in the formulation of light-absorbing layers for high-density optical discs and data storage films.
• Laser Technology: Used as a starting material for dyes in tunable dye lasers and as saturable absorbers in passive mode-locking.
• Photodynamic Therapy (PDT) Research: Investigated for the development of novel photosensitizers for targeted cancer treatments.
• Nonlinear Optical Materials: A valuable component in research for creating organic materials with high third-order nonlinear optical susceptibility.
• Chemical Sensors: Utilized in the development of selective chemosensors and ion probes due to its chromogenic properties.

Basic Information

Item	Details
Product Name	2-[5-(1,3-Dihydro-1,3,3-Trimethyl-2H-Indol-2-Ylidene)-1,3-Pentadien-1-Yl]-1,3,3-Trimethyl-3H-Indolium Chloride
CAS No.	54268-70-1
Molecular Formula	C29H35ClN2
Molecular Weight	447.05 g/mol
Synonyms	1,3,3-Trimethyl-2-[5-(1,3,3-trimethyl-1,3-dihydro-2H-indol-2-ylidene)penta-1,3-dien-1-yl]-3H-indol-1-ium chloride; IR-125; 1H-Indolium, 2-[5-(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1,3-pentadien-1-yl]-1,3,3-trimethyl-, chloride; Heptamethine cyanine dye intermediate; Cryptocyanine; NSC 83264; DTXSID40983757
EINECS	Contact for details

Quality Control

Our production of this cyanine dye intermediate adheres to strict in-process controls to ensure batch-to-batch consistency and high chemical purity. Every lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated 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.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in methanol, ethanol, DMSO, DMF

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