Description

4-Mercapto-Pentanoic Acid is a versatile sulfur-containing carboxylic acid that serves as a critical building block in advanced organic synthesis. Its unique structure, featuring both a thiol and a carboxylic acid functional group, makes it a valuable intermediate for creating complex molecules with tailored properties. This compound is particularly sought after by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries for applications ranging from drug development to material science.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing active pharmaceutical ingredients (APIs), particularly those requiring thiol or disulfide linkages.
• Agrochemical Synthesis: Used in the production of novel pesticides and herbicides where the mercapto group introduces specific biological activity.
• Polymer Modification: Acts as a chain transfer agent or functional monomer to introduce thiol groups into polymers, altering their cross-linking, adhesion, or rheological properties.
• Ligand Synthesis: Precursor for creating chelating agents and ligands used in catalysis and metal ion sequestration.
• Bioconjugation Chemistry: Utilized in the functionalization of peptides, proteins, and other biomolecules via thiol-reactive chemistry.
• Flavor and Fragrance Industry: Intermediate for synthesizing sulfur-containing compounds that contribute to specific aroma profiles.

Basic Information

Product Name	4-Mercapto-Pentanoic Acid
CAS No.	125791-83-5
Molecular Formula	C5H10O2S
Molecular Weight	134.20 g/mol
Synonyms	4-Mercaptovaleric Acid; 4-Sulfanylpentanoic Acid; 4-Thiopentanoic Acid; Pentanoic acid, 4-mercapto-; 4-MPA; 4-Mercapto-n-valeric Acid
EINECS	Contact for details

Quality Control

Our 4-Mercapto-Pentanoic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. We adhere to cGMP principles where applicable to support our customers in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C to minimize oxidation and degradation. The container should be kept in a cool, dry, and well-ventilated area, away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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