Description

Phosphonothioic Acid, Methyl-, o-Cyclopentyl Ester, (R)- (9Ci) is a high-purity, chiral organophosphorus compound characterized by its specific stereochemistry and phosphonothioate ester functional group. This compound serves as a critical chiral intermediate or ligand in advanced chemical synthesis, enabling the production of enantiomerically pure products. It is primarily required by pharmaceutical R&D, agrochemical manufacturers, and specialty chemical producers for applications in asymmetric catalysis and the development of novel active ingredients.

Application

• Pharmaceutical Intermediate: Key chiral building block for the synthesis of enantiomerically pure active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the research and production of advanced, stereospecific pesticides and herbicides.
• Asymmetric Catalysis: Serves as a precursor for chiral ligands or catalysts in stereoselective organic transformations.
• Chemical Research: Valuable reagent in academic and industrial laboratories for studying organophosphorus chemistry and chirality.
• Material Science: Potential monomer or additive in the development of specialized polymeric materials with specific properties.

Basic Information

Product Name	Phosphonothioic Acid, Methyl-, o-Cyclopentyl Ester, (R)- (9Ci)
CAS No.	140851-36-1
Molecular Formula	C6H13O2PS
Molecular Weight	180.21 g/mol
Synonyms	(R)-Methyl o-cyclopentyl phosphonothioate; (R)-Methyl Cyclopentyl Phosphonothioate; Methyl (R)-o-Cyclopentyl Phosphonothioate; (R)-MCPT; Phosphonothioic acid, methyl-, cyclopentyl ester, (R)-; (R)-Cyclopentyl Methylphosphonothioate; (R)-O-Cyclopentyl Methylphosphonothioate
EINECS	Contact for details

Quality Control

Our production of Phosphonothioic Acid, Methyl-, o-Cyclopentyl Ester, (R)- (9Ci) adheres to stringent internal quality standards to ensure batch-to-batch consistency and high chiral purity. Each lot undergoes comprehensive analytical testing, including chiral HPLC, NMR, and GC-MS, to verify identity, purity, and enantiomeric excess. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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