Description

1,3-Bis(1,3-Dihydro-1,3,3-Trimethyl-2H-Indol-2-Ylidene)-2-Propanone CAS NO 24293-93-4 is a specialized polymethine dye belonging to the cyanine family, valued for its strong absorption and fluorescence properties in the near-infrared (NIR) region. This compound serves as a critical functional material in advanced photonic and electronic applications due to its excellent photostability and tunable optical characteristics. It is primarily sought by manufacturers and researchers in the fields of optical data storage, laser technology, and non-linear optics.

Application

• Optical Data Storage Media: As a key recording layer dye for high-capacity CD-R, DVD-R, and Blu-ray discs.
• Laser Dyes & Optical Filters: Used in the formulation of tunable dye lasers and as an active medium in NIR optical filters and shutters.
• Non-Linear Optical (NLO) Materials: A vital component in the development of materials for frequency doubling, optical switching, and signal processing.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer agent for medical applications.
• Organic Photovoltaic (OPV) Cells: Employed in research for light-harvesting layers in next-generation solar cells.
• Chemical Sensors: Utilized in the fabrication of fluorescence-based sensors for detecting specific ions or molecules.
• Security Inks & Anti-Counterfeiting: Incorporated into inks for banknotes, documents, and high-value products due to its unique spectral signature.

Basic Information

Product Name	1,3-Bis(1,3-Dihydro-1,3,3-Trimethyl-2H-Indol-2-Ylidene)-2-Propanone
CAS No.	24293-93-4
Molecular Formula	C25H26N2O
Molecular Weight	370.49 g/mol
Synonyms	IR-125; 1,3,3,1',3',3'-Hexamethylindotricarbocyanine Iodide; HITCI; 2-[3-[1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)propenyl]-1,3,3-trimethyl-3H-indolium iodide; Cryptocyanine; Tricarbocyanine dye; NSC 112198; 1,3-Bis(1,3,3-trimethyl-2-indolinylidene)-2-propanone
EINECS	Contact for details

Quality Control

Our production of 1,3-Bis(1,3-Dihydro-1,3,3-Trimethyl-2H-Indol-2-Ylidene)-2-Propanone adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability for advanced applications. Each lot undergoes comprehensive analytical testing, including HPLC for purity, UV-Vis-NIR spectroscopy for absorbance profile verification, and residual solvent analysis. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

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 material is light-sensitive (store away from light) and should be handled under inert atmosphere when appropriate for prolonged stability.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
λmax (Absorption)	740 - 760 nm (in methanol)
Loss on Drying	≤ 1.0 %
Residue on Ignition	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm

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