Description

Carbamic Acid, [(1S)-1-Ethyl-2-Oxopropyl]-, 1,1-Dimethylethyl Ester (9Ci) is a specialized chiral intermediate of significant importance in advanced organic synthesis. This compound is valued for its role in constructing complex molecular architectures, particularly in the development of active pharmaceutical ingredients (APIs) and fine chemicals. It is primarily sought after by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors requiring high-purity, stereochemically defined building blocks.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the synthesis of novel therapeutic agents and active pharmaceutical ingredients (APIs).
• Agrochemical Research: Used in the development of advanced pesticides and herbicides where specific stereochemistry is crucial for bioactivity.
• Fine Chemical Synthesis: Serves as a versatile building block for creating complex, high-value specialty chemicals and catalysts.
• Peptidomimetics & Protease Inhibitors: Employed in medicinal chemistry for the design and synthesis of peptide analogs and enzyme inhibitors.
• Asymmetric Synthesis: Utilized in stereoselective reactions to introduce the [(1S)-1-ethyl-2-oxopropyl] moiety into target molecules.
• Academic & Industrial R&D: A valuable compound for methodological development and exploratory research in organic chemistry.

Basic Information

Product Name	Carbamic Acid, [(1S)-1-Ethyl-2-Oxopropyl]-, 1,1-Dimethylethyl Ester (9Ci)
CAS No.	304021-05-4
Molecular Formula	C12H23NO3
Molecular Weight	229.32 g/mol
Synonyms	tert-Butyl N-[(2S)-2-methyl-1-oxobutan-2-yl]carbamate; (S)-tert-Butyl (2-methyl-1-oxobutan-2-yl)carbamate; (S)-2-(tert-Butoxycarbonylamino)-2-methylbutanoic acid tert-butyl ester (tautomer); Boc-L-2-Amino-2-methylbutyric acid tert-butyl ester; N-Boc-2-amino-2-methylbutyric acid tert-butyl ester; (S)-tert-Butyl 2-((tert-butoxycarbonyl)amino)-2-methylbutanoate; 304021-05-4
EINECS	Contact for details

Quality Control

Our Carbamic Acid, [(1S)-1-Ethyl-2-Oxopropyl]-, 1,1-Dimethylethyl Ester (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) detailing identity, purity, and enantiomeric excess are provided with every shipment.

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). Keep away from strong acids and organic solvents. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Chiral Purity (Enantiomeric Excess)	≥ 98.0% ee
Melting Point	Contact for details
Loss on Drying	≤ 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.