Description

1-Carboxypentyl-2,3,3-Trimethylindolenium-5-Sulfate, Potassium Salt is a specialized indolenium-based salt, a key intermediate in the synthesis of functional dyes and advanced organic materials. Its value lies in its role as a versatile building block for creating cyanine dyes, which are critical for applications in imaging, diagnostics, and photonics. This high-purity compound is essential for research and development laboratories, pharmaceutical intermediates, and manufacturers of optical materials and fluorescent probes.

Application

• Cyanine Dye Synthesis: A crucial precursor for the production of heptamethine cyanine dyes and other polymethine dyes.
• Bioconjugation & Labeling Reagents: Used to create reactive dye intermediates for labeling proteins, antibodies, and nucleic acids in bioassays.
• Optical Materials: Serves as a key component in the development of materials for nonlinear optics (NLO) and laser applications.
• Fluorescent Probes & Sensors: Employed in the manufacture of near-infrared (NIR) fluorescent probes for in vivo imaging and diagnostic sensors.
• Photographic Sensitizers: Used in the formulation of advanced photographic emulsions and sensitizing dyes.
• Academic & Industrial R&D: A valuable reagent for synthetic organic chemistry research focused on heterocyclic compounds and dye chemistry.

Basic Information

Product Name	1-Carboxypentyl-2,3,3-Trimethylindolenium-5-Sulfate, Potassium Salt
CAS No.	246516-15-4
Molecular Formula	C18H24KNO6S
Molecular Weight	421.55 g/mol
Synonyms	5-Carboxypentyl-2,3,3-trimethyl-3H-indolium-5-sulfonate, potassium salt; 2,3,3-Trimethyl-1-(5-carboxypentyl)indolenium-5-sulfonate potassium salt; Potassium 1-(5-carboxypentyl)-2,3,3-trimethyl-3H-indolium-5-sulfonate; Cyanine dye intermediate K salt; Indolenium sulfonate salt; N-Pentanoic acid-2,3,3-trimethylindolenium-5-sulfonate potassium salt
EINECS	Contact for details

Quality Control

Our production of 1-Carboxypentyl-2,3,3-Trimethylindolenium-5-Sulfate, Potassium Salt adheres to stringent in-process controls to ensure batch-to-batch consistency and high chemical purity. Each lot is analyzed using advanced 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 quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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