Description

3,3'-Diethyl-9,11,9',11'-Bis(B,B-Dimethyltrimethylene)-Thiapentacarbocyanine Iodide is a specialized pentacarbocyanine dye salt, a high-value organic compound distinguished by its unique polymethine chain structure. This compound matters for its exceptional light-absorbing and emitting properties in the near-infrared (NIR) region, making it a critical functional material for advanced photonic applications. It is primarily needed by researchers and manufacturers in the fields of optical data storage, laser technology, and as a sensitizer for photodynamic therapy and diagnostic imaging.

Application

• Optical Data Storage Media: As a key NIR-absorbing dye for recordable (R) and rewritable (RW) optical discs (e.g., CD-R, DVD-R).
• Laser Technology: As a gain medium or saturable absorber in tunable dye lasers operating in the near-infrared spectrum.
• Photodynamic Therapy (PDT): As a potential photosensitizer for targeted cancer treatments due to its deep tissue penetration capability.
• Non-linear Optics (NLO): In the development of optical limiters, switches, and frequency converters.
• Biomedical Imaging: As a fluorescent probe or contrast agent for in vivo imaging and diagnostic assays.
• Organic Photovoltaics (OPV): As an electron donor or acceptor material in the active layer of solar cells.
• Chemical Sensors: For the detection of specific ions or molecules based on spectral shifts.
• Academic & Industrial R&D: For fundamental studies in photochemistry and the synthesis of novel functional dyes.

Basic Information

Item	Detail
Product Name	3,3'-Diethyl-9,11,9',11'-Bis(B,B-Dimethyltrimethylene)-Thiapentacarbocyanine Iodide
CAS No.	20517-94-6
Molecular Formula	C39H47IN2S2
Molecular Weight	758.83 g/mol
Synonyms	NK-2014; Thiapentacarbocyanine dye; 3,3'-Diethyl-9,11,9',11'-bis(δ,δ-dimethyltrimethylene)thiapentacarbocyanine iodide; NIR Cyanine Dye; Pentamethine thiacyanine iodide; 2-[5-[3-(5-Carboxy-5-{[5-(2-carboxy-3-ethyl-1,3-benzothiazol-3-ium-2-yl)-2,4-pentadien-1-ylidene]ethylidene}-2,3-dihydro-4-thiazolyl)-2-propen-1-ylidene]-4-ethyl-4-thiazolin-2-ylidene]-3-ethyl-1,3-benzothiazolium iodide (alternative IUPAC); Heptamethine thiacarbocyanine dye analog
EINECS	Contact for details

Quality Control

Our production of 3,3'-Diethyl-9,11,9',11'-Bis(B,B-Dimethyltrimethylene)-Thiapentacarbocyanine Iodide adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability for sensitive optical applications. Each lot undergoes comprehensive analysis including HPLC purity assessment, spectrophotometric characterization (UV-Vis-NIR), and identity confirmation. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment, and we support custom purity grades to meet specific R&D or manufacturing requirements.

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 hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept sealed under an inert atmosphere (e.g., argon or nitrogen) when not in use to prevent degradation and moisture absorption. For long-term storage, consider storing at 2-8°C.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (UV-Vis)	λmax conforms
Purity (HPLC)	≥ 95.0% (Standard Grade)
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility Test	Clear solution in dichloromethane or DMSO

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