Description

(4E)-3-Hydroxy-2-[(Z)-(1,3,3-Trimethylindol-2-Ylidene)Methyl]-4-[(1,3,3-Trimethylindol-2-Yl)Methylidene]Cyclobut-2-En-1-One is a sophisticated organic compound belonging to the class of polymethine cyanine dyes. This product matters as a high-purity functional dye intermediate with unique photophysical properties, essential for advanced material science and optical applications. It is primarily needed by manufacturers in the photographic, optical data storage, and laser dye industries for synthesizing specialized colorants and sensitizers.

Application

• Key Intermediate for Cyanine Dyes: Serves as a critical building block in the synthesis of heptamethine and other polymethine cyanine dyes.
• Optical Data Storage Media: Used in the formulation of recording layers for writable CDs and DVDs due to its light-absorbing characteristics.
• Photographic Sensitizers: Applied in silver halide photography to extend the spectral sensitivity of emulsions.
• Laser Dye Precursor: A vital component for producing tunable organic dye lasers operating in the near-infrared region.
• Non-Linear Optical (NLO) Materials: Investigated for use in the development of materials for photonics and optoelectronics.
• Biomedical Imaging Probes: Utilized in research for synthesizing fluorescent labels and contrast agents.

Basic Information

Item	Detail
Product Name	(4E)-3-Hydroxy-2-[(Z)-(1,3,3-Trimethylindol-2-Ylidene)Methyl]-4-[(1,3,3-Trimethylindol-2-Yl)Methylidene]Cyclobut-2-En-1-One
CAS No.	14238-53-0
Molecular Formula	C30H30N2O2
Molecular Weight	450.58 g/mol
Synonyms	1H-Indolium, 2-[2-[3-hydroxy-4-oxo-2-cyclobuten-1-ylidene)ethylidene]-1,3,3-trimethyl-, inner salt; Cyclobutenediylium, 3-hydroxy-2-[(1,3,3-trimethyl-2-indolinylidene)methyl]-4-[(1,3,3-trimethyl-2-indolinylium-2-yl)methylene]-, hydroxide, inner salt; Heptamethine cyanine dye intermediate; IR-125 dye precursor; 2-[2-(3-Hydroxy-4-oxocyclobut-2-en-1-ylidene)ethylidene]-1,3,3-trimethylindoline; NK-1252 (common trade name reference)
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and high purity. Each 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 every shipment to support your R&D and manufacturing 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). This compound is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent degradation. Keep the container tightly sealed when not in use.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC, Area %)	≥ 98.0%
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.