Description

β-Oxo-Cyclopentanepropanoic Acid 1,1-Dimethylethyl Ester is a high-purity, protected keto acid derivative that serves as a critical building block in advanced organic synthesis. Its value lies in its role as a versatile synthon for constructing complex molecular architectures, particularly in pharmaceutical and fine chemical research. This compound is essential for chemists and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require reliable, high-quality intermediates for complex synthesis, including the development of active pharmaceutical ingredients (APIs) and novel chemical entities.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs), particularly those containing cyclopentane or modified propanoid structures.
• Agrochemical Synthesis: Used in the research and development of novel pesticides, herbicides, and plant growth regulators requiring specific keto-acid functionalities.
• Fine Chemical Production: Serves as a versatile synthon for creating specialty chemicals, flavors, fragrances, and advanced materials.
• Academic & Industrial R&D: Employed in research laboratories for method development, catalysis studies, and the exploration of new organic reaction pathways.
• Peptidomimetic Chemistry: Useful in the design and synthesis of peptide analogs and conformationally restricted scaffolds due to its protected carboxylic acid and ketone groups.

Basic Information

Product Name	β-Oxo-Cyclopentanepropanoic Acid 1,1-Dimethylethyl Ester
CAS No.	134302-08-2
Molecular Formula	C12H18O3
Molecular Weight	210.27 g/mol
Synonyms	3-(3-Oxocyclopentyl)propanoic acid tert-butyl ester; tert-Butyl 3-(3-oxocyclopentyl)propanoate; 3-(3-Oxocyclopentyl)propionic acid tert-butyl ester; 1,1-Dimethylethyl 3-(3-oxocyclopentyl)propanoate; 3-(3-Oxocyclopentyl)propanoic acid 1,1-dimethylethyl ester; tert-Butyl β-oxocyclopentanepropionate; β-Ketocyclopentanepropanoic Acid tert-Butyl Ester
EINECS	Contact for details

Quality Control

Our β-Oxo-Cyclopentanepropanoic Acid 1,1-Dimethylethyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistent performance for demanding synthetic applications. Certificates of Analysis (COA) with detailed specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong acids and incompatible materials such as strong oxidizing agents. The container should be kept tightly sealed to prevent moisture absorption and potential degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Purity (GC)	≥ 96.0%
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.