Description

Diethyl [2-(2,2,3-Trimethylcyclopentyl)Ethyl]Malonate is a high-purity, specialized malonate ester derivative, serving as a critical chiral intermediate in advanced organic synthesis. Its unique sterically hindered cyclopentyl structure makes it a valuable building block for constructing complex molecules with defined stereochemistry. This compound is essential for R&D and production chemists in the pharmaceutical and fine chemical industries, particularly for the synthesis of fragrances, bioactive compounds, and other high-value specialty chemicals.

Application

• Pharmaceutical Intermediate: Key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs), especially those requiring complex, sterically defined carbon frameworks.
• Fragrance and Flavor Synthesis: Serves as a precursor for musky, woody, and amber odorants, leveraging the 2,2,3-trimethylcyclopentyl moiety to create unique scent profiles.
• Fine Chemical Production: Used in the multi-step synthesis of agrochemicals, liquid crystals, and other performance chemicals where precise molecular architecture is required.
• Asymmetric Synthesis: Employed in reactions catalyzed by organocatalysts or metal complexes to introduce chiral centers in target molecules.
• Research & Development: A valuable tool in academic and industrial R&D for exploring new synthetic methodologies and developing novel compound libraries.

Basic Information

Product Name	Diethyl [2-(2,2,3-Trimethylcyclopentyl)Ethyl]Malonate
CAS No.	85187-21-9
Molecular Formula	C₁₇H₃₀O₄
Molecular Weight	298.42 g/mol
Synonyms	Diethyl 2-[2-(2,2,3-Trimethylcyclopentyl)ethyl]malonate; 2-(2,2,3-Trimethylcyclopentyl)ethylmalonic Acid Diethyl Ester; Ethyl [2-(2,2,3-Trimethylcyclopentyl)ethyl]propanedioate; Propanedioic acid, 2-[2-(2,2,3-trimethylcyclopentyl)ethyl]-, 1,3-diethyl ester; (2,2,3-Trimethylcyclopentyl)ethyl Malonate Diethyl Ester; Malonic acid, (2-(2,2,3-trimethylcyclopentyl)ethyl)-, diethyl ester
EINECS	Contact for details

Quality Control

Our Diethyl [2-(2,2,3-Trimethylcyclopentyl)Ethyl]Malonate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography (HPLC, GC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical quality attributes are provided with every shipment. We can support development projects with custom purity grades, from technical to research (>95%, >98%, >99%).

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C/59-77°F). Keep away from heat, sparks, and open flame. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 95.0% (Custom grades available)
Water Content (KF)	≤ 0.5%
Specific Rotation (if chiral)	Contact for details

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