Description

4-Methoxyphenylacetic acid is a versatile aromatic carboxylic acid derivative that serves as a critical building block in advanced organic synthesis. Its value lies in the methoxy-substituted phenylacetic acid structure, which provides a reactive site for chemical modification and a functional handle for creating complex molecules. This intermediate is essential for manufacturers in the pharmaceutical, agrochemical, and fine chemical industries seeking to develop active ingredients and specialty compounds.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of non-steroidal anti-inflammatory drugs (NSAIDs), cardiovascular agents, and other active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators, leveraging its aromatic backbone.
• Fragrance and Flavor Ingredient: Acts as a starting material for the manufacture of certain aromatic compounds used in perfumery and flavorings.
• Fine Chemical Building Block: Employed in organic research and development for constructing complex molecular architectures, including ligands and functional materials.
• Dye and Pigment Intermediate: Serves as a raw material in the synthesis of certain specialized dyes and organic pigments.

Basic Information

Product Name	4-Methoxyphenylacetic acid
CAS No.	104-01-8
Molecular Formula	C9H10O3
Molecular Weight	166.17 g/mol
Synonyms	(4-Methoxyphenyl)acetic acid; p-Methoxyphenylacetic acid; 4-Methoxybenzeneacetic acid; Homovanillic acid methyl ether; PMAA; 2-(4-Methoxyphenyl)acetic acid; 4-Methoxy-α-toluic acid; NSC 403697
EINECS	203-167-5

Quality Control

Our 4-Methoxyphenylacetic acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for use in sensitive applications. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are provided and available upon request to support your quality assurance protocols.

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 oxidizing agents, strong bases, and heat sources.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	85°C - 89°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.