Description

3-Cyclopentene-1,2-Dione,3,4,5,5-Tetramethyl-(9Ci) is a specialized tetramethyl-substituted cyclopentenedione derivative, serving as a high-value synthetic intermediate and building block in advanced organic synthesis. Its unique sterically hindered structure is critical for developing complex molecules with tailored properties. This compound is essential for R&D and production in the pharmaceutical, agrochemical, and material science industries, where precise molecular architecture is required.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for complex heterocyclic compounds.
• Agrochemical Research: Used as a building block for developing new generation pesticides and herbicides with specific activity profiles.
• Material Science: Serves as a monomer or cross-linking agent in the development of specialty polymers and advanced organic materials.
• Organic Synthesis & Catalysis: Valuable ligand precursor or scaffold in asymmetric catalysis and the construction of complex natural product analogs.
• Fine Chemical Production: Employed in the manufacture of dyes, pigments, and other performance chemicals requiring specific diketone functionalities.
• Academic & Industrial R&D: Fundamental research tool in synthetic organic chemistry for methodology development and exploring new chemical spaces.

Basic Information

Product Name	3-Cyclopentene-1,2-Dione,3,4,5,5-Tetramethyl-(9Ci)
CAS No.	380897-52-9
Molecular Formula	C9H12O2
Molecular Weight	152.19 g/mol
Synonyms	3,4,5,5-Tetramethylcyclopent-3-ene-1,2-dione; 3,4,5,5-Tetramethyl-3-cyclopentene-1,2-dione; Tetramethylcyclopentenedione; 3-Cyclopentene-1,2-dione, 3,4,5,5-tetramethyl-; 1,2-Cyclopentenedione, 3,4,5,5-tetramethyl-; (9CI) 380897-52-9
EINECS	Contact for details

Quality Control

Our 3-Cyclopentene-1,2-Dione,3,4,5,5-Tetramethyl-(9Ci) is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC, GC, NMR, and IR spectroscopy, to verify identity and purity. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting all relevant specifications. We adhere to cGMP principles where applicable to support our clients in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider maintaining the product under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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