Description

4-Methoxysalicylic Acid is a versatile methoxy-substituted derivative of salicylic acid, valued for its role as a key synthetic intermediate and functional component. Its molecular structure provides a balance of phenolic and carboxylic acid reactivity, making it a crucial building block for advanced chemical synthesis. This compound is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and specialty chemical sectors seeking to develop new active ingredients or functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of non-steroidal anti-inflammatory drugs (NSAIDs), dermatological actives, and other APIs.
• UV Absorber & Stabilizer: Used in the formulation of sunscreens and personal care products due to its ability to absorb ultraviolet light.
• Agrochemical Synthesis: Serves as a building block for developing herbicides, fungicides, and plant growth regulators.
• Dye & Pigment Manufacturing: Employed in the production of azo dyes and other complex colorants.
• Organic Synthesis & Research: A versatile reagent for constructing complex molecules in academic and industrial research laboratories.
• Polymer Additive: Can act as a monomer or additive to impart specific properties like UV stability to polymers.

Basic Information

Product Name	4-Methoxysalicylic Acid
CAS No.	2237-36-7
Molecular Formula	C8H8O4
Molecular Weight	168.15 g/mol
Synonyms	4-Methoxy-2-hydroxybenzoic Acid; 2-Hydroxy-4-methoxybenzoic Acid; p-Methoxysalicylic Acid; 4-MSA; 4-Methoxysalicylate; NSC 403697; 4-Methoxy-2-hydroxybenzoate
EINECS	218-795-6

Quality Control

Our 4-Methoxysalicylic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, IR for identification, and loss on drying, to ensure it meets exacting standards for consistency and performance. Certificates of Analysis (COA) documenting all specifications are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Melting Point	168°C - 172°C
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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