Description

3-Chlorophthalide is a versatile halogenated phthalide derivative, serving as a critical synthetic intermediate in advanced organic chemistry. Its value lies in its unique molecular structure, which enables the construction of complex heterocyclic systems and functionalized aromatic compounds. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to develop active ingredients and novel materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of potential drug candidates, particularly those with phthalide or isoindolinone cores.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and plant growth regulators.
• Organic Light-Emitting Diodes (OLEDs): Serves as a precursor for electron-transport materials and host materials in OLED device fabrication.
• Dye and Pigment Chemistry: Intermediate for creating specialized colorants and functional dyes with specific light-absorption properties.
• Polymer Modification: Employed to introduce chlorophthalide functional groups into polymer chains, altering thermal and mechanical properties.
• Academic and R&D: A valuable reagent for methodological studies in organic synthesis, including cyclization and cross-coupling reactions.

Basic Information

Product Name	3-Chlorophthalide
CAS No.	6295-21-2
Molecular Formula	C8H5ClO2
Molecular Weight	168.58 g/mol
Synonyms	3-Chloro-1(3H)-isobenzofuranone; 3-Chlorophthalide; 3-Chloro-1,3-dihydro-2-benzofuran-1-one; 3-Chloro-2-benzofuran-1(3H)-one; NSC 403697; 3-Chloro-1(3H)-isobenzofuranone; 3-Chloroisobenzofuran-1(3H)-one
EINECS	228-548-4

Quality Control

Our 3-Chlorophthalide is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity verification and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) detailing all test results are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong bases and reducing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	105 - 110 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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