Description

1-Isobenzofurancarbonylchloride,1,3-Dihydro-3-Oxo-(9Ci) is a specialized heterocyclic building block and acid chloride derivative of significant synthetic utility. This compound is a key intermediate for the construction of complex organic molecules, particularly in pharmaceutical and advanced material research. It is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for synthesizing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of novel drug candidates, particularly those containing isobenzofuran or phthalide-related scaffolds.
• Agrochemical Synthesis: Used in the research and development of new pesticides and herbicides, leveraging its reactive acid chloride functionality.
• Fine Chemical Production: Serves as a versatile precursor for creating complex dyes, pigments, and specialty polymers.
• Material Science Research: Employed in the development of organic electronic materials and advanced polymers due to its fused aromatic structure.
• Academic & R&D Laboratories: A valuable reagent for methodological studies in organic synthesis and heterocyclic chemistry.

Basic Information

Product Name	1-Isobenzofurancarbonylchloride,1,3-Dihydro-3-Oxo-(9Ci)
CAS No.	75724-95-7
Molecular Formula	C9H5ClO2
Molecular Weight	180.59 g/mol
Synonyms	3-Oxo-1,3-dihydroisobenzofuran-1-carbonyl chloride; 1,3-Dihydro-3-oxo-1-isobenzofurancarbonyl chloride; 3-Oxophthalide-1-carbonyl chloride; Phthalide-1-carbonyl chloride; 1-Carboxyphthalide chloride; Isobenzofuran-1-carbonyl chloride, 1,3-dihydro-3-oxo-; 1-Chlorocarbonyl-3-phthalide
EINECS	Contact for details

Quality Control

Our 1-Isobenzofurancarbonylchloride,1,3-Dihydro-3-Oxo-(9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory needs.

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 degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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