Description

1-Cyclopentene-1,2-Dicarboxylic Acid, 4-(1,1-Dimethylethyl)- (9Ci) is a specialized, high-purity cyclopentene derivative that serves as a critical building block in advanced organic synthesis. Its unique sterically hindered structure and dual carboxylic acid functionality make it a valuable precursor for creating complex molecular architectures. This compound is primarily sought after by research institutions and industrial R&D departments in the pharmaceutical and agrochemical sectors for developing novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of proprietary drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Research: Used in developing novel herbicides, fungicides, and plant growth regulators with specific steric properties.
• Ligand & Catalyst Synthesis: Serves as a precursor for creating sophisticated chelating ligands and organometallic catalysts used in asymmetric synthesis.
• Polymer Chemistry: Employed in the research and development of specialty polymers, including polyimides and polyamides, for high-performance materials.
• Academic & Industrial R&D: A valuable reagent for methodological studies in organic chemistry, particularly in cycloaddition and ring-opening reactions.
• Fine Chemical Production: Used in the custom synthesis of complex, high-value specialty chemicals for various technological applications.

Basic Information

Item	Details
Product Name	1-Cyclopentene-1,2-Dicarboxylic Acid, 4-(1,1-Dimethylethyl)- (9Ci)
CAS No.	40557-34-4
Molecular Formula	C11H16O4
Molecular Weight	212.24 g/mol
Synonyms	4-tert-Butyl-1-cyclopentene-1,2-dicarboxylic acid; 4-(tert-Butyl)cyclopent-4-ene-1,2-dicarboxylic acid; 4-(1,1-Dimethylethyl)-1-cyclopentene-1,2-dicarboxylic acid; 4-tert-Butyl-1-cyclopentene-1,2-dicarboxylate (parent acid); 40557-34-4; tert-Butylcyclopentenedicarboxylic Acid
EINECS	Contact for details

Quality Control

Our production of 1-Cyclopentene-1,2-Dicarboxylic Acid, 4-(1,1-Dimethylethyl)- (9Ci) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is fully characterized and tested using advanced analytical techniques including HPLC, NMR, and IR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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