Description

3H-INDOLIUM, 2-[2-[2-CHLORO-3-[(1,3-DIHYDRO-1,3,3-TRIMETHYL-5-SULFO-2H-INDOL-2-YLIDENE)ETHYLIDENE]-1-CYCLOHEXEN-1-YL]ETHENYL]-1,3,3-TRIMETHYL-5-SULFO-, INNER SALT, SODIUM SALT is a high-purity, functional cyanine dye derivative, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound is engineered for applications requiring precise photophysical characteristics and excellent chemical stability. It is a critical material for researchers and manufacturers in the fields of optical imaging, photodynamic therapy, and advanced material science.

Application

• NIR Fluorescent Probes & Labels: Used in the development of sensitive bioimaging agents and diagnostic assays for in vivo and in vitro applications.
• Photodynamic Therapy (PDT) Agents: Serves as a key photosensitizer component in therapeutic formulations targeting cancer and other diseases.
• Optical Data Storage: Employed in the research and production of advanced recording media due to its specific light-absorption profile.
• Laser Dyes & Optical Filters: Functions as an active medium in tunable dye lasers and as a component in specialized optical filters.
• Non-Linear Optical Materials: Utilized in the synthesis of organic compounds for photonics and optoelectronic device research.
• Sensor Development: Acts as a signaling moiety in chemical and biological sensors for detecting various analytes.

Basic Information

Product Name	3H-INDOLIUM, 2-[2-[2-CHLORO-3-[(1,3-DIHYDRO-1,3,3-TRIMETHYL-5-SULFO-2H-INDOL-2-YLIDENE)ETHYLIDENE]-1-CYCLOHEXEN-1-YL]ETHENYL]-1,3,3-TRIMETHYL-5-SULFO-, INNER SALT, SODIUM SALT
CAS No.	328064-20-6
Molecular Formula	C31H34ClN2NaO6S2
Molecular Weight	653.18 g/mol
Synonyms	IR-780 Iodide Analog (Chloro Derivative); Sodium 2-[2-[2-Chloro-3-[(1,3-dihydro-1,3,3-trimethyl-5-sulfo-2H-indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-1,3,3-trimethyl-5-sulfo-3H-indolium; NIR Cyanine Dye Chloro Salt; 2-[2-[2-Chloro-3-[(1,3-dihydro-1,3,3-trimethyl-5-sulfo-2H-indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-1,3,3-trimethyl-5-sulfo-3H-indolium, inner salt, sodium salt; Heptamethine Cyanine Dye Derivative; Chloro-substituted Cyanine Dye Sodium Salt
EINECS	Contact for details

Quality Control

Our 3H-INDOLIUM dye derivative is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for absorbance/fluorescence verification, and elemental analysis. A Certificate of Analysis (COA) detailing identity, purity, and key physical properties is provided to ensure traceability and compliance with your research or production specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed in a desiccated environment to prevent degradation. For long-term storage, consider inert atmosphere conditions.

Specification

Item	Specification
Appearance	Dark green to blue-black powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 5.0%
Absorption λmax	780 ± 5 nm (in Methanol)
Residue on Ignition	≤ 1.0%

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