Description

4-Methoxyphthalic Acid is a versatile aromatic dicarboxylic acid derivative, distinguished by the presence of a methoxy substituent on the phthalic acid backbone. This compound is valued for its role as a key synthetic intermediate in the production of complex organic molecules, offering a reactive site for further chemical modifications. It is primarily sought after by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for applications in research, development, and commercial synthesis.

Application

• Pharmaceutical Intermediate: Serves as a crucial building block in the synthesis of active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators.
• Polymer & Resin Modifier: Acts as a monomer or additive to impart specific properties like thermal stability or reactivity in specialty polymers.
• Dye & Pigment Manufacturing: Functions as a precursor in the synthesis of complex organic dyes and high-performance pigments.
• Liquid Crystal & OLED Materials: Employed in the research and development of electronic display materials and organic semiconductors.
• Chemical Research & Development: Utilized as a standard or starting material in academic and industrial R&D for novel compound synthesis.

Basic Information

Product Name	4-Methoxyphthalic Acid
CAS No.	1885-13-8
Molecular Formula	C9H8O5
Molecular Weight	196.16 g/mol
Synonyms	4-Methoxybenzene-1,2-dicarboxylic Acid; 1,2-Benzenedicarboxylic Acid, 4-Methoxy-; 4-Methoxy-o-phthalic Acid; 4-Methoxyphthalic Acid; 2-Carboxy-4-methoxybenzoic Acid; 4-Methoxyisophthalic Acid (common misnomer); 4-Methoxyphthalic Acid (CAS 1885-13-8)
EINECS	217-527-8

Quality Control

Our 4-Methoxyphthalic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and titration methods, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment 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 sources of heat.

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)	≤ 20 ppm

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