Description

4-Methoxyphenylacetic Anhydride is a high-purity chemical intermediate essential for advanced organic synthesis. Its value lies in its role as a versatile acylating agent and building block for creating more complex molecular architectures. This compound is particularly critical for manufacturers in the pharmaceutical and fine chemical industries, where it is used in the production of active pharmaceutical ingredients (APIs) and specialty agrochemicals.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of non-steroidal anti-inflammatory drugs (NSAIDs) and other therapeutic agents.
• Agrochemical Synthesis: Used in the production of advanced herbicides and plant growth regulators.
• Fine Chemical Production: Serves as a precursor for dyes, pigments, and specialty polymers.
• Peptide Chemistry: Employed as a protecting group or coupling agent in peptide synthesis.
• Fragrance and Flavor Industry: Intermediate for synthesizing specific aromatic compounds.
• Academic and R&D: Used in research laboratories for method development and novel compound discovery.

Basic Information

Product Name	4-Methoxyphenylacetic Anhydride
CAS No.	3951-10-8
Molecular Formula	C18H18O5
Molecular Weight	314.33 g/mol
Synonyms	p-Methoxyphenylacetic Anhydride; (4-Methoxyphenyl)acetic Anhydride; Anhydride of 4-Methoxyphenylacetic Acid; 2-(4-Methoxyphenyl)acetic Anhydride; Bis(4-methoxyphenyl)acetic Anhydride; 4-MPA Anhydride; PMAA; Contact for EINECS details.

Quality Control

Our 4-Methoxyphenylacetic Anhydride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for pharmaceutical and fine chemical applications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

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 (moisture-sensitive) nature, the container must be kept 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
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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