Description

4-Methoxybenzoic Anhydride is a high-purity organic chemical intermediate characterized by its anhydride functional group derived from 4-methoxybenzoic acid. This compound matters for its role as a versatile acylating and coupling agent in sophisticated organic synthesis, enabling the efficient introduction of the 4-methoxybenzoyl moiety. It is primarily needed by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for producing active ingredients, fine chemicals, and advanced materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring the 4-methoxybenzoyl group.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Acts as a monomer or modifying agent in the synthesis of specialty polyesters and polyamides with specific thermal or solubility properties.
• Fine Chemical Production: Employed as an acylating agent in the manufacture of dyes, pigments, and liquid crystal compounds.
• Peptide Coupling: Serves as a coupling reagent or protecting group agent in peptide synthesis protocols.
• Laboratory Research: Utilized in academic and R&D settings for method development and exploring new synthetic pathways.

Basic Information

Product Name	4-Methoxybenzoic Anhydride
CAS No.	794-94-5
Molecular Formula	C16H14O5
Molecular Weight	286.28 g/mol
Synonyms	p-Anisic Anhydride; 4-Methoxybenzoyl Anhydride; Bis(4-methoxybenzoyl) Anhydride; Anisoyl Anhydride; p-Methoxybenzoic Anhydride; 4-Methoxybenzoyl Oxide; p-Anisoyl Anhydride; 4-Methoxybenzoic Acid Anhydride
EINECS	212-350-8

Quality Control

Our 4-Methoxybenzoic Anhydride is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for sensitive synthetic applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request 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 room temperature (15-25°C). Keep away from strong bases, strong oxidizing agents, and moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	95 - 99 °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.