Description

2-Cyclopentene-1-Carboxylicacid,5,5-Dimethoxy-4-Methyl-,Methylester,(1R,4S)-Rel-(9Ci) is a high-purity chiral building block and advanced pharmaceutical intermediate of significant commercial interest. Its defined stereochemistry and functionalized cyclopentene core make it a valuable synthon for the enantioselective synthesis of complex bioactive molecules. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for developing novel active ingredients.

Application

• Pharmaceutical Intermediate: A key chiral precursor in the synthesis of prostaglandin analogs, antiviral agents, and other small-molecule therapeutics.
• Agrochemical Synthesis: Used in the research and development of novel pesticides and herbicides with specific stereochemical requirements.
• Chemical Research: Serves as a versatile building block in asymmetric synthesis and methodology development for constructing complex carbocyclic structures.
• Fine Chemical Production: Employed in the manufacture of specialty chemicals, flavors, and fragrances where precise stereocontrol is essential.

Basic Information

Product Name	2-Cyclopentene-1-Carboxylicacid,5,5-Dimethoxy-4-Methyl-,Methylester,(1R,4S)-Rel-(9Ci)
CAS No.	757231-60-0
Molecular Formula	C10H16O5
Molecular Weight	216.23 g/mol
Synonyms	(1R,4S)-rel-5,5-Dimethoxy-4-methyl-2-cyclopentene-1-carboxylic acid methyl ester; Methyl (1R,4S)-rel-5,5-dimethoxy-4-methyl-2-cyclopentene-1-carboxylate; 5,5-Dimethoxy-4-methyl-2-cyclopentene-1-carboxylic Acid Methyl Ester, (1R,4S)-rel-; (1R,4S)-rel-Methyl 5,5-dimethoxy-4-methyl-2-cyclopentene-1-carboxylate; 2-Cyclopentene-1-carboxylic acid, 5,5-dimethoxy-4-methyl-, methyl ester, (1R,4S)-rel-
EINECS	Contact for details

Quality Control

Our production of this chiral intermediate adheres to strict quality management systems, ensuring batch-to-batch consistency and high chemical purity. Each lot is characterized using advanced analytical techniques including HPLC, GC, Chiral HPLC, and NMR to confirm identity, enantiomeric excess, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications is 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 (typically 15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider holding under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC/GC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
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.