Description

L-Proline, 3-Ethyl-5-Oxo-, (3S)- (9Ci) is a specialized, non-proteinogenic proline derivative characterized by its unique 3-ethyl-5-oxo substitution pattern. This compound serves as a valuable chiral building block and intermediate in advanced organic synthesis, particularly for the development of pharmaceuticals and bioactive molecules. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and fine chemical industries who require high-purity, structurally defined intermediates for complex synthetic routes.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and production of active pharmaceutical ingredients (APIs), especially for protease inhibitors and other targeted therapies.
• Peptidomimetics Research: Used to synthesize modified peptide analogs to study structure-activity relationships and enhance metabolic stability or bioavailability.
• Agrochemical Synthesis: Serves as a precursor in the development of novel herbicides, fungicides, and plant growth regulators with specific chiral requirements.
• Asymmetric Catalysis: Employed as a ligand or precursor for chiral catalysts used in enantioselective synthesis.
• Biochemical Research: Utilized as a probe or standard in enzymatic studies and metabolic pathway analysis.
• Fine Chemical Production: Acts as a building block for the synthesis of complex natural products, flavors, and fragrances.

Basic Information

Product Name	L-Proline, 3-Ethyl-5-Oxo-, (3S)- (9Ci)
CAS No.	531539-38-5
Molecular Formula	C7H11NO3
Molecular Weight	157.17 g/mol
Synonyms	(3S)-3-Ethyl-5-oxopyrrolidine-2-carboxylic acid; (S)-3-Ethyl-5-oxopyrrolidine-2-carboxylic acid; 3-Ethyl-5-oxo-L-proline; L-3-Ethyl-5-oxoproline; 2-Pyrrolidinecarboxylic acid, 3-ethyl-5-oxo-, (3S)-; 3-Ethyl-5-oxo-DL-proline (related to racemic mixture); Proline derivative, 3-ethyl-5-oxo-
EINECS	Contact for details

Quality Control

Our L-Proline, 3-Ethyl-5-Oxo-, (3S)- (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity verification by HPLC, to ensure it meets the high standards required for research and synthesis. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are available upon request to support your quality assurance and regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent degradation from atmospheric moisture. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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