Description

1,2-Cyclopentanediol CAS NO 4065-92-3 is a versatile chiral diol building block of significant interest in fine chemical synthesis. Its value lies in its rigid cyclopentane backbone and two adjacent hydroxyl groups, which make it a key precursor for pharmaceuticals, agrochemicals, and advanced materials. This compound is particularly sought after by research institutions and industrial manufacturers involved in asymmetric synthesis, chiral ligand development, and the production of high-value specialty chemicals.

Application

• Pharmaceutical Intermediate: A crucial chiral synthon for the synthesis of active pharmaceutical ingredients (APIs), especially those requiring specific stereochemistry.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where the diol structure imparts desired biological activity.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for producing specialty polyesters, polyurethanes, and resins with enhanced thermal or mechanical properties.
• Chiral Ligand & Catalyst Preparation: The scaffold is utilized to develop novel chiral ligands for asymmetric catalysis in organic synthesis.
• Flavor & Fragrance Industry: Acts as a starting material for synthesizing specific aroma chemicals and musk compounds.
• Research & Development: A valuable standard and reagent in academic and industrial R&D for method development and exploring new synthetic pathways.

Basic Information

Product Name	1,2-Cyclopentanediol
CAS No.	4065-92-3
Molecular Formula	C5H10O2
Molecular Weight	102.13 g/mol
Synonyms	Cyclopentane-1,2-diol; 1,2-Dihydroxycyclopentane; cis/trans-1,2-Cyclopentanediol; (1R,2R)-Cyclopentane-1,2-diol; (1S,2S)-Cyclopentane-1,2-diol; (1R,2S)-Cyclopentane-1,2-diol (meso form); Cyclopentanediol
EINECS	223-763-1

Quality Control

Our 1,2-Cyclopentanediol is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chiral purity assessment by HPLC, to ensure it meets the high standards required for advanced synthetic applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, enantiomeric excess (where applicable), and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	Specified per grade (e.g., ≥99% ee for enantiopure forms)
Water Content (KF)	≤ 1.0%
Melting Point	Specified range
Residue on Ignition	≤ 0.1%

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