Description

2-[2-[3-[2-(1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-2-(hexahydro-1,3-dimethyl-2,4,6-trioxo-5-pyrimidinyl)-1-cyclopenten-1-yl]ethenyl]-1,3,3-trimethyl-3H-indolium inner salt is a sophisticated polymethine dye belonging to the cyanine family, valued for its exceptional light-absorbing and fluorescent properties. This compound is engineered to deliver high molar absorptivity and photostability, making it a critical functional component in advanced optical applications. It is primarily sought after by manufacturers and researchers in the photonics, imaging, and specialty chemical sectors for its performance in cutting-edge technologies.

Application

• Nonlinear Optical (NLO) Materials: A key chromophore for the development of organic materials with second- and third-order nonlinear optical properties, used in optical switching, signal processing, and frequency conversion devices.
• Laser Dyes and Optical Filters: Serves as an active medium in tunable dye lasers and as a precise colorant for high-performance optical filters due to its sharp absorption bands.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer candidate for cancer treatment research, leveraging its ability to generate reactive oxygen species upon light activation.
• Molecular Probes and Bioimaging: Used in the synthesis of fluorescent labels and probes for biological sensing and high-resolution cellular imaging applications.
• Organic Photovoltaic (OPV) and Solar Cells: Functions as a light-harvesting material in the active layer of experimental organic solar cells to improve photon absorption and energy conversion efficiency.
• Data Storage Media: Employed in the research and development of next-generation optical data storage technologies, such as write-once and rewritable disks.
• Chemical Sensors: Integrated into sensor designs for the detection of specific ions or molecules, where a colorimetric or fluorescent signal change is required.
• Academic and Industrial R&D: A vital reagent for synthetic chemistry and materials science research focused on novel functional dyes and advanced organic semiconductors.

Basic Information

Product Name	2-[2-[3-[2-(1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-2-(hexahydro-1,3-dimethyl-2,4,6-trioxo-5-pyrimidinyl)-1-cyclopenten-1-yl]ethenyl]-1,3,3-trimethyl-3H-indolium inner salt
CAS No.	256520-09-9
Molecular Formula	C37H41N4O3+ (inner salt form)
Molecular Weight	Contact for details
Synonyms	2-[2-[3-[2-(1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-2-(hexahydro-1,3-dimethyl-2,4,6-trioxo-5-pyrimidinyl)-1-cyclopenten-1-yl]ethenyl]-1,3,3-trimethyl-3H-indolium hydroxide, inner salt; Cyanine dye derivative with barbiturate acceptor; 1,3,3-Trimethyl-2-[2-[3-[2-(1,3,3-trimethylindolin-2-ylidene)ethylidene]-2-(1,3-dimethyl-2,4,6-trioxotetrahydropyrimidin-5-yl)cyclopent-1-en-1-yl]vinyl]-1H-indol-3-ium; Polymethine dye CAS 256520-09-9; Barbiturate-functionalized heptamethine cyanine dye; NK-2012 (potential research code); Advanced NLO chromophore 256520-09-9; Light-harvesting cyanine salt.
EINECS	Contact for details

Quality Control

Our production of this advanced cyanine dye adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry to confirm identity, purity, and the absence of critical impurities. A comprehensive Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to support your R&D and 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). The product is light-sensitive and should be handled under appropriate conditions to prevent degradation. Keep the container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 95.0% (Area %)
UV-Vis Absorption (λmax)	Contact for details
Moisture Content (KF)	≤ 2.0%
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.