Description

4-Mercaptobutyrate is a versatile sulfur-containing organic compound with a terminal thiol group and a carboxylate ester functionality. This dual reactivity makes it a valuable building block for synthesizing complex molecules in pharmaceutical and specialty chemical research. It is particularly sought after for applications requiring the introduction of a thiol moiety or as a precursor for heterocyclic compounds.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing active pharmaceutical ingredients (APIs), especially those containing sulfur heterocycles or thioether linkages.
• Peptide Modification: Used in bioconjugation chemistry to introduce thiol groups into peptides or proteins for labeling, cross-linking, or creating drug conjugates.
• Polymer Chemistry: Serves as a chain transfer agent (CTA) or functional monomer in the synthesis of specialty polymers, imparting specific properties like metal chelation or cross-linking sites.
• Ligand Synthesis: Precursor for creating chelating ligands used in catalysis or metal ion extraction processes.
• Flavor & Fragrance Industry: Intermediate in the production of certain sulfur-containing flavor compounds.
• Research & Development: A valuable reagent in organic synthesis for constructing carbon-sulfur bonds and exploring new chemical entities.

Basic Information

Product Name	4-Mercaptobutyrate
CAS No.	13095-66-4
Molecular Formula	C5H8O2S
Molecular Weight	132.18 g/mol
Synonyms	4-Mercaptobutyric Acid Methyl Ester; Methyl 4-Mercaptobutyrate; Methyl 3-Carbathiopropanethioate; 4-Thiobutanoic Acid Methyl Ester; 4-Sulfanylbutyric Acid Methyl Ester; Butanoic acid, 4-mercapto-, methyl ester; NSC 3349
EINECS	Contact for details

Quality Control

Our 4-Mercaptobutyrate is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality system is designed to meet the stringent requirements of research and industrial applications.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended storage temperature is 2-8°C for long-term stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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