Description

3,6-Dimethoxyphthalic Anhydride is a high-purity, functionalized phthalic anhydride derivative characterized by its two methoxy substituents. This compound serves as a versatile and critical chemical intermediate for synthesizing advanced materials and specialty chemicals. It is primarily sought after by pharmaceutical and agrochemical research and development teams, as well as manufacturers of dyes, pigments, and polymer modifiers.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a functionalized phthalimide or phthalic acid core.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where the dimethoxy groups impart specific biological activity or stability.
• Dye and Pigment Manufacturing: Serves as a precursor for creating colorants with enhanced solubility, lightfastness, and specific hue properties.
• Polymer Chemistry: Employed as a monomer or cross-linking agent to introduce aromaticity and specific functional groups into polyimides, epoxy resins, and other high-performance polymers.
• Organic Synthesis & Research: A valuable reagent in academic and industrial R&D for constructing complex organic molecules, including ligands for catalysis and materials for organic electronics.

Basic Information

Product Name	3,6-Dimethoxyphthalic Anhydride
CAS No.	14597-12-7
Molecular Formula	C10H8O5
Molecular Weight	208.17 g/mol
Synonyms	3,6-Dimethoxyphthalic Anhydride; 3,6-Dimethoxy-1,3-dihydroisobenzofuran-1,3-dione; 3,6-Dimethoxyisobenzofuran-1,3-dione; 3,6-Dimethoxyphtalic Anhydride; 1,3-Dihydro-3,6-dimethoxy-1,3-dioxoisobenzofuran; Phthalic Anhydride, 3,6-dimethoxy-
EINECS	Contact for details

Quality Control

Our 3,6-Dimethoxyphthalic Anhydride is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and spectroscopic identification (IR, NMR), to ensure it meets stringent specifications for use in sensitive applications. A detailed Certificate of Analysis (COA) is provided with each shipment, and we support compliance with relevant regulatory frameworks.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic nature, store in a cool, dry place at a controlled room temperature (15-25°C). The container should be kept tightly sealed in a dry environment to prevent moisture absorption, which can affect product quality and stability.

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	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	< 20 ppm

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