Description

3-Penten-2-One, 4-Mercapto-, (3Z)- (9Ci) is a specialized sulfur-containing ketone, specifically a thio-ketone derivative, valued for its unique chemical structure that incorporates both a mercapto group and an α,β-unsaturated ketone moiety. This compound serves as a versatile and high-value chemical intermediate and flavor & fragrance precursor due to its reactive sites, enabling precise synthesis of complex molecules. It is primarily sought by R&D laboratories and production facilities in the pharmaceutical, aroma chemical, and fine chemical synthesis sectors.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and complex heterocyclic compounds, leveraging its thiol and ketone functionalities.
• Flavor and Fragrance Ingredient: Acts as a key precursor for creating sulfur-containing aroma molecules that impart meaty, roasted, or savory notes in savory flavors and perfumery.
• Organic Synthesis Building Block: Employed in Michael addition reactions, nucleophilic substitutions, and as a ligand or catalyst precursor in asymmetric synthesis.
• Agrochemical Research: Investigated as an intermediate for developing novel crop protection agents and pesticides.
• Material Science: Potential use in the synthesis of functionalized polymers or as a surface-modifying agent.
• Chemical Research & Development: Serves as a standard or reagent in methodological studies and novel reaction pathway development.

Basic Information

Product Name	3-Penten-2-One, 4-Mercapto-, (3Z)- (9Ci)
CAS No.	65581-04-6
Molecular Formula	C5H8OS
Molecular Weight	116.18 g/mol
Synonyms	4-Mercapto-3-penten-2-one, (Z)-; (3Z)-4-Mercaptopent-3-en-2-one; 4-Sulfanylpent-3-en-2-one; 3-Penten-2-one, 4-mercapto-, (Z)-; Unsaturated thio-ketone; 4-Mercapto-3-penten-2-one; Potential flavor precursor FEMA 4XXX series (example).
EINECS	Contact for details

Quality Control

Our 3-Penten-2-One, 4-Mercapto-, (3Z)- (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis (GC/HPLC) and structural confirmation (IR, NMR), to ensure it meets precise customer specifications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request, supporting compliance in regulated applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated place at controlled room temperature (15-25°C). Due to its highly volatile and light-sensitive nature, containers should be kept sealed and handled under an inert atmosphere (e.g., nitrogen) when appropriate to minimize oxidation and moisture uptake. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0% (Typical 97-99%)
Isomeric Purity (Z-isomer)	≥ 90.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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