Description

1,2,3-Benzothiadiazole-7-Carbonyl Chloride (9Ci) is a high-purity, reactive chemical intermediate featuring a benzothiadiazole core activated by a carbonyl chloride group. This compound is valued for its role as a key building block in the synthesis of complex heterocyclic molecules and functional materials. It is primarily sought after by research institutions and industrial manufacturers in the agrochemical and pharmaceutical sectors for developing novel active ingredients and advanced intermediates.

Application

• Agrochemical Intermediate: A critical precursor for the synthesis of novel fungicides, herbicides, and plant growth regulators targeting the benzothiadiazole class of compounds.
• Pharmaceutical Research: Serves as a versatile building block in medicinal chemistry for creating potential drug candidates, particularly in developing protease inhibitors and other small-molecule therapeutics.
• Material Science: Used in the development of advanced functional materials, including organic semiconductors, dyes, and photoactive polymers.
• Chemical Synthesis: Employed as an acylating agent in organic synthesis to introduce the benzothiadiazole-7-carbonyl moiety into more complex molecular architectures.

Basic Information

Product Name	1,2,3-Benzothiadiazole-7-Carbonyl Chloride (9Ci)
CAS No.	124371-49-9
Molecular Formula	C7H3ClN2OS
Molecular Weight	198.63 g/mol
Synonyms	1,2,3-Benzothiadiazole-7-carbonyl chloride; 7-Chlorocarbonyl-1,2,3-benzothiadiazole; Benzothiadiazole-7-carbonyl chloride; 1,2,3-Benzothiadiazole-7-carboxylic acid chloride; BTZ-COCl; 124371-49-9 (CAS); 7-Carboxybenzothiadiazole chloride
EINECS	Contact for details

Quality Control

Our 1,2,3-Benzothiadiazole-7-Carbonyl Chloride is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high chemical purity. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing key parameters such as assay, identity, and impurity profiles. Our quality system is designed to meet the stringent requirements of research and development as well as scale-up production.

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 under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Keep away from strong acids and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
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.