Description

Propanoic Acid, 2-Oxo-, (2E)-2-Butenyl Ester (9Ci) is a specialized organic ester derivative of 2-oxopropanoic acid, valued for its role as a versatile chemical intermediate and building block in advanced synthesis. Its unique structure, featuring an α-keto acid ester moiety and an unsaturated butenyl chain, makes it a critical precursor for creating complex molecules with tailored properties. This compound is essential for R&D chemists and process engineers in the fine chemical, pharmaceutical, and agrochemical sectors seeking to develop novel active ingredients or functional materials.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the production of active pharmaceutical ingredients (APIs), particularly those requiring α-keto ester functionalities.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators.
• Flavor & Fragrance Ingredient: Acts as a precursor for synthesizing specific ester-based aroma compounds.
• Polymer & Material Science: Employed as a monomer or cross-linking agent in the synthesis of specialty polymers with specific degradation or adhesion properties.
• Organic Synthesis Building Block: Utilized in various name reactions, including Claisen condensations and Michael additions, to construct complex molecular architectures.
• Biochemical Research: Applied in studies involving enzyme inhibitors or metabolic pathway probes due to its α-keto acid structure.

Basic Information

Product Name	Propanoic Acid, 2-Oxo-, (2E)-2-Butenyl Ester (9Ci)
CAS No.	655243-54-2
Molecular Formula	C7H10O3
Molecular Weight	142.15 g/mol
Synonyms	(2E)-2-Butenyl 2-oxopropanoate; 2-Butenyl pyruvate; trans-2-Butenyl pyruvate; Pyruvic acid (2E)-2-butenyl ester; 2-Oxopropanoic acid 2-butenyl ester; But-2-en-1-yl pyruvate; CAS 655243-54-2
EINECS	Contact for details

Quality Control

Our production of Propanoic Acid, 2-Oxo-, (2E)-2-Butenyl Ester (9Ci) adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity. Each lot is fully characterized using advanced analytical techniques including GC, HPLC, and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment. We support cGMP-compliant manufacturing for pharmaceutical applications upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Recommended storage temperature is 2-8°C for long-term stability. Keep away from strong bases and incompatible materials such as strong oxidizing agents. The container should be kept tightly sealed in a dry environment to minimize exposure to moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
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.