Description

1,3-Isobenzofurandione, 5-Acetyl- is a specialized organic compound belonging to the phthalide and isobenzofurandione chemical class. This high-purity intermediate is valued for its unique acetyl-substituted aromatic structure, which makes it a critical building block in advanced synthetic chemistry. It is primarily sought by research institutions and industrial manufacturers in the pharmaceutical and agrochemical sectors for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs), particularly those targeting central nervous system and inflammatory pathways.
• Agrochemical Synthesis: Used in the research and production of next-generation herbicides, fungicides, and plant growth regulators.
• Organic Light-Emitting Diode (OLED) Materials: Serves as a building block for electron-transport materials and host materials in OLED device fabrication.
• Polymer Chemistry: Employed as a monomer or modifier in the synthesis of specialty polymers, including polyimides and engineering plastics with enhanced thermal properties.
• Dye and Pigment Intermediate: Utilized in the manufacture of high-performance pigments and optical brighteners.
• Academic and R&D: A valuable reagent for methodological development and exploratory organic synthesis in university and corporate research laboratories.

Basic Information

Item	Details
Product Name	1,3-Isobenzofurandione, 5-Acetyl-
CAS No.	858442-67-8
Molecular Formula	C10H6O4
Molecular Weight	190.15 g/mol
Synonyms	5-Acetylisobenzofuran-1,3-dione; 5-Acetylphthalide-1,3-dione; 5-Acetyl-1,3-isobenzofurandione; 5-Acetylphthalic anhydride; Acetylphthalic anhydride; 1,3-Dioxoisobenzofuran-5-yl ethanone
EINECS	Contact for details

Quality Control

Our production of 1,3-Isobenzofurandione, 5-Acetyl- adheres to stringent quality management protocols. Every batch is subjected to comprehensive analytical testing, including HPLC, GC, and NMR, to ensure high purity and batch-to-batch consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting identity, purity, and impurity profiles to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to exclude moisture. Keep away from incompatible materials such as strong bases, strong oxidizing agents, and strong reducing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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