Description

Propanoic Acid, 2-Oxo-, 2-Propynyl Ester (9Ci) is a specialized organic ester compound with the CAS number 655243-57-5. This chemical is valued for its propargyl ester functionality, which makes it a versatile intermediate in advanced organic synthesis and polymer chemistry. It is primarily sought by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring propargyl or acetylene linkages.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where its reactive ester group enables specific molecular modifications.
• Polymer & Resin Modifier: Acts as a functional monomer or cross-linking agent in the manufacture of specialty polymers, coatings, and adhesives to enhance properties like thermal stability or chemical resistance.
• Chemical Research & Development: Employed in academic and industrial R&D labs for exploring new organic reactions, catalysis, and material science applications.
• Fine Chemical Production: Utilized as a precursor in the multi-step synthesis of complex fine chemicals and flavors & fragrances.

Basic Information

Product Name	Propanoic Acid, 2-Oxo-, 2-Propynyl Ester (9Ci)
CAS No.	655243-57-5
Molecular Formula	C6H6O3
Molecular Weight	126.11 g/mol
Synonyms	2-Oxopropanoic Acid 2-Propynyl Ester; Propargyl Pyruvate; Pyruvic Acid Propargyl Ester; 2-Propynyl Pyruvate; Propargyl 2-Oxopropanoate; Acetylformic Acid Propargyl Ester; 655243-57-5; Propargyl Ester of Pyruvic Acid
EINECS	Contact for details

Quality Control

Our Propanoic Acid, 2-Oxo-, 2-Propynyl Ester is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and batch-to-batch consistency suitable for sensitive synthetic applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, open flames, and incompatible materials such as strong oxidizing agents, strong acids, and strong bases. The container should be kept tightly sealed to minimize exposure to moisture and air.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (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.