Description

4-Amino-3-Mercaptobenzoic Acid HCl is a specialized aromatic compound that serves as a versatile building block in advanced chemical synthesis. Its unique structure, featuring both amino and mercapto functional groups, makes it a critical intermediate for creating complex molecules with tailored properties. This high-purity intermediate is essential for research and production in the pharmaceutical, agrochemical, and material science industries, where precise molecular architecture is required.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs targeting specific receptors or enzymes.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators.
• Ligand and Chelating Agent: Serves as a building block for creating specialized ligands used in catalysis and metal ion sequestration.
• Polymer Modification: Employed to introduce functional thiol and amine groups into polymer backbones for enhanced properties.
• Bioconjugation Chemistry: Useful in the development of linkers and probes for bioconjugation and diagnostic applications.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new chemical entities and reaction pathways.

Basic Information

Product Name	4-Amino-3-Mercaptobenzoic Acid HCl
CAS No.	1571-66-0
Molecular Formula	C7H8ClNO2S
Molecular Weight	205.66 g/mol
Synonyms	3-Mercapto-4-aminobenzoic acid hydrochloride; 4-Amino-3-sulfanylbenzoic acid hydrochloride; Benzoic acid, 4-amino-3-mercapto-, hydrochloride; 4-Amino-3-thiolbenzoic acid HCl; 3-Thiol-4-aminobenzoic acid hydrochloride; 4-Amino-3-mercaptobenzoic acid monohydrochloride
EINECS	Contact for details

Quality Control

Our 4-Amino-3-Mercaptobenzoic Acid HCl is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity, IR for identification, and titration for assay confirmation, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation. For long-term storage, consider using an inert atmosphere to minimize oxidation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
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.