Description

Phosphorous Acid, Ethyl Ester, Cyclic Ester With 2-Hydroxycyclopentanemethanol (7Ci) is a specialized organophosphorus compound with a unique cyclic structure, serving as a versatile intermediate in advanced chemical synthesis. Its value lies in its ability to introduce phosphorus-containing functional groups into complex molecules, enabling the development of novel materials and active ingredients. This high-purity intermediate is essential for R&D and production within the pharmaceutical, agrochemical, and specialty polymer industries, where precise molecular architecture is critical.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing novel active pharmaceutical ingredients (APIs), particularly in antiviral or other therapeutic areas.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, or plant growth regulators.
• Ligand and Catalyst Precursor: Serves as a starting material for creating specialized ligands used in homogeneous catalysis and metal complexation.
• Flame Retardant Additive Development: Investigated as a reactive intermediate for creating new, efficient organophosphorus flame retardants.
• Polymer Modification: Employed to incorporate phosphorus moieties into polymer backbones, enhancing properties like thermal stability or adhesion.
• Chemical Research (R&D): A valuable reagent for academic and industrial research exploring new phosphorus chemistry and material science.

Basic Information

Product Name	Phosphorous Acid, Ethyl Ester, Cyclic Ester With 2-Hydroxycyclopentanemethanol (7Ci)
CAS No.	92383-79-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	2-Hydroxycyclopentanemethanol cyclic ethyl phosphite; Cyclic ethyl ester of phosphorous acid with 2-hydroxycyclopentanemethanol; Ethyl 2-hydroxycyclopentylmethyl phosphite; 7Ci (code); Organophosphorus cyclic ester; Phosphorous acid cyclic ethyl ester with (hydroxymethyl)cyclopentanol
EINECS	Contact for details

Quality Control

Our Phosphorous Acid, Ethyl Ester, Cyclic Ester is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatography and spectroscopy, to verify identity and assay. Certificates of Analysis (COA) documenting all critical quality parameters are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This compound is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen or argon) is recommended to preserve stability and purity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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