Description

4-Butyrothiolactone is a sulfur-containing heterocyclic compound, specifically a thiolactone, that serves as a versatile building block in organic synthesis. Its unique structure, featuring a reactive carbonyl group adjacent to a sulfur atom, makes it a valuable precursor for synthesizing various sulfur-functionalized molecules and complex heterocycles. This chemical is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for developing active ingredients and advanced intermediates.

Application

• Pharmaceutical Intermediate: Key synthon for the production of thiol-containing drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Building block for creating novel herbicides, fungicides, and insecticides with sulfur-based moieties.
• Polymer Chemistry: Monomer or modifier for introducing sulfur functionality into polymers to alter properties like adhesion or thermal stability.
• Organic Synthesis Reagent: Used in ring-opening reactions, thioesterifications, and as a precursor to mercapto acids and other sulfur derivatives.
• Flavor & Fragrance Industry: Intermediate for synthesizing certain sulfur-containing aroma compounds.
• Material Science Research: Investigated for creating novel organic materials and ligands for metal coordination.

Basic Information

Product Name	4-Butyrothiolactone
CAS No.	1003-10-7
Molecular Formula	C₄H₆OS
Molecular Weight	102.15 g/mol
Synonyms	Dihydro-2(3H)-thiophenone; γ-Thiobutyrolactone; Tetrahydrothiophen-2-one; 2-Oxotetrahydrothiophene; 4-Thiobutyrolactone; Thiophane-2-one; Butyrothiolactone
EINECS	213-700-6

Quality Control

Our 4-Butyrothiolactone is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets precise specifications for research and industrial use. Certificates of Analysis (COA) documenting purity, physical properties, and test results are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). Keep away from strong oxidizing agents, strong bases, and moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.510 - 1.520
Density (g/mL, 20°C)	1.180 - 1.210

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