Description

Carbamic Acid, [(1S)-1-Methyl-2-Oxo-3-Butynyl]-, 1,1-Dimethylethyl Ester (9Ci) is a specialized chiral building block featuring a reactive butynyl ester group. This compound is of significant value in advanced organic synthesis, particularly for constructing complex molecules with defined stereochemistry. It is primarily sought after by research and development teams in the pharmaceutical and agrochemical industries for the synthesis of active pharmaceutical ingredients (APIs) and novel bioactive compounds.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the multi-step synthesis of proprietary drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Research: Used in the development of novel pesticides and herbicides, leveraging its reactive alkyne functionality for structural diversification.
• Peptidomimetics & Protease Inhibitors: Serves as a crucial component for introducing specific stereocenters and functional groups in the design of peptide analogs and enzyme inhibitors.
• Asymmetric Synthesis: Employed in catalytic asymmetric reactions to produce enantiomerically enriched compounds for high-value applications.
• Chemical Biology Probes: Utilized in the synthesis of molecular probes for studying biological pathways and target engagement, due to its modifiable structure.
• Material Science Research: Acts as a monomer or precursor for developing specialized polymers with unique optical or electronic properties.

Basic Information

Product Name	Carbamic Acid, [(1S)-1-Methyl-2-Oxo-3-Butynyl]-, 1,1-Dimethylethyl Ester (9Ci)
CAS No.	97973-95-0
Molecular Formula	C10H15NO3
Molecular Weight	197.23 g/mol
Synonyms	tert-Butyl N-[(2S)-1-methyl-2-oxobut-3-yn-1-yl]carbamate; (S)-tert-Butyl (1-methyl-2-oxo-3-butyn-1-yl)carbamate; (S)-tert-Butyl (1-methyl-2-oxobut-3-yn-1-yl)carbamate; (S)-Boc-2-amino-3-butynoic acid tert-butyl ester derivative; N-Boc-L-2-amino-3-butynoic acid tert-butyl ester; N-(tert-Butoxycarbonyl)-L-2-amino-3-butynoic acid tert-butyl ester; Chiral Butynyl Ester Building Block
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Quality is verified through comprehensive analytical techniques including HPLC, GC, and chiral analysis. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting purity, enantiomeric excess, and other critical parameters.

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 compound is easily oxidized and should be handled under an inert atmosphere (e.g., nitrogen or argon) for long-term storage or after opening to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residual Solvents (GC)	Meets ICH guidelines

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