Description

Cyclopentanemalonic Acid CAS NO 5660-81-1 is a versatile dicarboxylic acid derivative featuring a cyclopentane ring, serving as a critical building block in advanced organic synthesis. Its unique structure makes it a valuable precursor for the development of complex molecules, including active pharmaceutical ingredients (APIs) and specialty polymers. This high-purity intermediate is essential for research and production in the pharmaceutical, agrochemical, and fine chemical industries, where precise molecular architecture is required.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of novel drug candidates, particularly those containing fused or bridged ring systems.
• Agrochemical Synthesis: Used in the production of advanced herbicides and fungicides that require specific cyclic frameworks for bioactivity.
• Polymer Chemistry: Acts as a monomer or cross-linking agent for creating specialty polyesters and polyamides with tailored thermal and mechanical properties.
• Ligand and Catalyst Development: Employed in the preparation of chiral ligands and organocatalysts for asymmetric synthesis.
• Fine Chemical Production: Serves as a starting material for fragrances, flavors, and other high-value specialty chemicals.
• Academic and Industrial R&D: A valuable reagent for methodological development and exploring new chemical spaces in organic chemistry.

Basic Information

Product Name	Cyclopentanemalonic Acid
CAS No.	5660-81-1
Molecular Formula	C8H12O4
Molecular Weight	172.18 g/mol
Synonyms	1,1-Cyclopentanediacetic Acid; Cyclopentane-1,1-diacetic Acid; 1,1-Bis(carboxymethyl)cyclopentane; Cyclopentanemalonic Acid; Cyclopentylidenemalonic Acid; 3-Cyclopentylidenepropanedioic Acid; NSC 163045
EINECS	227-100-5

Quality Control

Our Cyclopentanemalonic Acid is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is subjected to comprehensive analytical testing, including identity confirmation, purity assay, and impurity profiling. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment. We adhere to cGMP principles where applicable to support our customers in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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