Description

Carbamic Acid, [(1R)-4-Oxo-2-Cyclopenten-1-Yl]-, 1,1-Dimethylethyl Ester (9Ci) is a high-purity, chiral cyclopentenone derivative that serves as a critical advanced intermediate in organic synthesis. This compound matters for its role as a versatile building block in the stereoselective construction of complex molecules, particularly in pharmaceutical research and development. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for the synthesis of active pharmaceutical ingredients (APIs) and other biologically active compounds.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of prostaglandin analogs, antiviral agents, and other complex therapeutic molecules.
• Asymmetric Synthesis: Utilized in stereocontrolled reactions, including Michael additions and cycloadditions, to introduce the (1R)-4-oxocyclopentenyl moiety.
• Agrochemical Research: Serves as a precursor in the development of novel herbicides and plant growth regulators with specific stereochemistry.
• Fine Chemical Production: Employed in the custom synthesis of specialty chemicals, flavors, and fragrances requiring high enantiomeric purity.
• Academic & Institutional R&D: Used in methodological studies and the discovery of new catalytic processes in university and government laboratories.
• Process Chemistry Development: Investigated for scale-up and optimization in pilot plants for cost-effective manufacturing of target molecules.

Basic Information

Product Name	Carbamic Acid, [(1R)-4-Oxo-2-Cyclopenten-1-Yl]-, 1,1-Dimethylethyl Ester (9Ci)
CAS No.	657397-01-8
Molecular Formula	C11H15NO3
Molecular Weight	209.24 g/mol
Synonyms	(1R)-4-Oxo-2-cyclopenten-1-yl carbamic acid tert-butyl ester; tert-Butyl N-[(1R)-4-oxocyclopent-2-en-1-yl]carbamate; (R)-tert-Butyl (4-oxocyclopent-2-en-1-yl)carbamate; (R)-tert-Butyl 4-oxocyclopent-2-enecarbamate; (1R)-1-((tert-Butoxycarbonyl)amino)-4-oxocyclopent-2-ene; BOC-(R)-4-Oxocyclopentenylamine; (R)-BOC-4-Oxocyclopentenylamine; (R)-1-N-Boc-amino-4-oxocyclopent-2-ene
EINECS	Contact for details

Quality Control

Our Carbamic Acid, [(1R)-4-Oxo-2-Cyclopenten-1-Yl]-, 1,1-Dimethylethyl Ester (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high chemical and enantiomeric purity, meeting the exacting standards required for advanced synthetic applications. Certificates of Analysis (COA) detailing identity, purity (HPLC), chiral purity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed and away from moisture and direct light exposure to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Chiral Purity (Chiral HPLC)	≥ 99.0% ee
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.