Description

3-Ethyl-2-[2-Methyl-3-[3-(3-Sulphonatopropyl)-3H-Benzothiazol-2-Ylidene]Prop-1-Enyl]-5-Phenylbenzoxazolium is a high-purity, sulfonated cyanine dye intermediate essential for advanced material science and life science applications. Its core value lies in its strong near-infrared (NIR) absorption and fluorescence properties, making it a critical component for synthesizing specialized functional dyes. This compound is primarily needed by manufacturers and R&D teams in the biomedical imaging, optical data storage, and specialty polymer sectors.

Application

• Fluorescent Probe Synthesis: A key precursor for creating NIR fluorescent labels and tags used in bioimaging, flow cytometry, and immunoassays.
• Optical Recording Media: Used in the formulation of dyes for high-density optical data storage disks (e.g., CD-R, DVD-R).
• Laser Dye Manufacturing: Serves as an intermediate for producing tunable laser dyes in the NIR spectrum for scientific and medical lasers.
• Photodynamic Therapy (PDT) Agents: Employed in research for developing next-generation photosensitizers for cancer treatment.
• Non-Linear Optical Materials: A building block for organic compounds with applications in photonics and electro-optics.
• Sensor Technology: Used in the development of chemical and biological sensors that utilize fluorescence detection.
• Textile and Industrial Dyes: Imparts specific coloristic and functional properties to high-performance synthetic fibers and coatings.

Basic Information

Product Name	3-Ethyl-2-[2-Methyl-3-[3-(3-Sulphonatopropyl)-3H-Benzothiazol-2-Ylidene]Prop-1-Enyl]-5-Phenylbenzoxazolium
CAS No.	35574-16-4
Molecular Formula	C30H29N2O4S2+ • (Counterion)-
Molecular Weight	545.69 g/mol (for cation)
Synonyms	NK-2014; Benzoxazolium, 3-ethyl-2-[2-methyl-3-[3-(3-sulfopropyl)-2(3H)-benzothiazolylidene]-1-propenyl]-, inner salt; 3-Ethyl-2-[(1E,3E)-2-methyl-3-[3-(3-sulfopropyl)-1,3-benzothiazol-2-ylidene]prop-1-en-1-yl]-5-phenyl-1,3-benzoxazol-3-ium; Sulfo-Cyanine Dye Intermediate; NIR Cyanine Dye Salt; 35574-16-4; Light-sensitive cyanine dye
EINECS	Contact for details

Quality Control

Our production of this cyanine dye intermediate adheres to strict cGMP guidelines to ensure batch-to-batch consistency and high purity for sensitive applications. Every lot undergoes comprehensive analysis via HPLC, NMR, and mass spectrometry to confirm identity, purity, and the absence of critical impurities. A detailed Certificate of Analysis (COA) documenting all specifications 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 place at a controlled room temperature (15-25°C). The product is light-sensitive (store away from light) 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
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 3.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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