Description

3-Cyclopentene-1,2-Diol, 1-Ethynyl-3-Methyl-, cis- (9Ci) is a specialized, high-value organic intermediate featuring a unique cis-fused cyclopentene diol core with an ethynyl substituent. This compound matters for its role as a sophisticated building block in advanced organic synthesis, enabling the construction of complex molecular architectures. It is primarily needed by research chemists and process development scientists in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Serves as a key chiral precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders or with complex polycyclic structures.
• Agrochemical Synthesis: Used in the research and development of new-generation pesticides and herbicides, where its unique scaffold can contribute to novel modes of action.
• Material Science Research: Investigated as a monomer or cross-linking agent for developing specialty polymers with tailored thermal or mechanical properties.
• Academic & R&D: A valuable reagent in academic laboratories and corporate R&D for methodology development and exploring new chemical spaces in synthetic organic chemistry.
• Fine Chemical Production: Employed in the multi-step synthesis of complex fragrance ingredients, flavors, or other high-value specialty chemicals.

Basic Information

Product Name	3-Cyclopentene-1,2-Diol, 1-Ethynyl-3-Methyl-, cis- (9Ci)
CAS No.	90314-47-9
Molecular Formula	C8H10O2
Molecular Weight	138.16 g/mol
Synonyms	1-Ethynyl-3-methyl-3-cyclopentene-1,2-diol, cis-; cis-1-Ethynyl-3-methylcyclopent-3-ene-1,2-diol; 3-Cyclopentene-1,2-diol, 1-ethynyl-3-methyl-, (1α,2β)-; (1R,2S)-1-Ethynyl-3-methylcyclopent-3-ene-1,2-diol; (1S,2R)-1-Ethynyl-3-methylcyclopent-3-ene-1,2-diol; 90314-47-9; cis-1-Ethynyl-3-methyl-3-cyclopentene-1,2-diol
EINECS	Contact for details

Quality Control

Our 3-Cyclopentene-1,2-Diol, 1-Ethynyl-3-Methyl-, cis- (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with detailed chromatographic and spectroscopic data, including HPLC purity, chiral purity, and structural confirmation. Our quality commitment supports cGMP and ISO-guided practices for research and development materials.

Storage

Preserve in a tightly closed container, protected from light. For long-term storage, keep at 2-8°C under an inert atmosphere (e.g., nitrogen or argon) to prevent oxidation and degradation. The compound is moisture-sensitive; handle and store in a dry environment.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Chiral Purity (Chiral HPLC)	≥ 98.0% ee
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.