Description

4-Aminosalicylic Acid is a white to off-white crystalline powder known for its role as an important pharmaceutical intermediate. This compound is valued for its specific chemical structure, which makes it a key building block in the synthesis of active pharmaceutical ingredients (APIs). It is primarily utilized by manufacturers in the pharmaceutical, research, and fine chemical sectors for the development of therapeutic agents.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of anti-tuberculosis drugs and other therapeutic agents.
• Research & Development: Used in biochemical and pharmacological research for studying drug mechanisms and developing new compounds.
• Fine Chemical Synthesis: Serves as a versatile building block for creating complex organic molecules in custom synthesis projects.
• Chemical Reference Standard: Employed as a high-purity standard in analytical laboratories for quality control and method validation.

Basic Information

Product Name	4-Aminosalicylic Acid
CAS No.	65-49-6
Molecular Formula	C7H7NO3
Molecular Weight	153.14 g/mol
Synonyms	PAS; Para-Aminosalicylic Acid; 4-Amino-2-hydroxybenzoic Acid; Aminosalicylic Acid; p-Aminosalicylic Acid; PASER; 2-Hydroxy-4-aminobenzoic Acid; 4-PAS
EINECS	200-613-5

Quality Control

Our 4-Aminosalicylic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for pharmaceutical applications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

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 light-sensitive nature and tendency to be easily oxidized, prolonged exposure to light, air, or moisture should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.5%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 1.5%

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