Description

Carbamic Acid, (2-Oxocyclopentyl)-, 1,1-Dimethylethyl Ester, (S)- (9Ci) CAS NO 145106-46-3 is a high-purity, chiral carbamate derivative characterized by its cyclopentanone and tert-butyl ester functional groups. This compound serves as a critical chiral building block and advanced pharmaceutical intermediate for the synthesis of complex, biologically active molecules. It is primarily needed by research institutions and manufacturers in the pharmaceutical and agrochemical industries for developing new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and production of novel active pharmaceutical ingredients (APIs), particularly for central nervous system (CNS) and metabolic disorder therapeutics.
• Asymmetric Synthesis: Utilized as a versatile chiral auxiliary or precursor in stereoselective organic synthesis to construct complex molecular architectures.
• Agrochemical Research: Serves as a building block for developing new chiral pesticides and herbicides with enhanced efficacy and selectivity.
• Process Chemistry: Employed in route scouting and scale-up processes for the commercial manufacturing of fine chemicals and specialty materials.
• Academic & R&D: Used in university and corporate research laboratories for methodological studies in organic chemistry and medicinal chemistry programs.

Basic Information

Product Name	Carbamic Acid, (2-Oxocyclopentyl)-, 1,1-Dimethylethyl Ester, (S)- (9Ci)
CAS No.	145106-46-3
Molecular Formula	C11H19NO3
Molecular Weight	213.27 g/mol
Synonyms	(S)-tert-Butyl (2-oxocyclopentyl)carbamate; (S)-N-Boc-2-aminocyclopentanone; (S)-2-((tert-Butoxycarbonyl)amino)cyclopentan-1-one; (S)-1-(tert-Butoxycarbonylamino)cyclopentan-2-one; (S)-Boc-2-ACP; (S)-N-(tert-Butoxycarbonyl)-2-aminocyclopentanone; tert-Butyl (S)-(2-oxocyclopentyl)carbamate
EINECS	Contact for details

Quality Control

Our Carbamic Acid, (2-Oxocyclopentyl)-, 1,1-Dimethylethyl Ester, (S)- (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure compliance with high-purity standards for research and industrial use. Certificates of Analysis (COA) detailing purity, chiral purity (enantiomeric excess), and impurity profiles are provided with every shipment and 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 (typically 15-25°C). This material is moisture-sensitive (hygroscopic); keep the container tightly sealed under an inert atmosphere if specified. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (ee)	≥ 99.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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