Description

4-Cyclopentene-1,3-Dione, 2-(1-Hydroxyethylidene)-4-Methyl-, (E)- (9Ci) is a specialized organic compound belonging to the class of substituted cyclopentenediones, valued for its unique structural motif and reactivity. This chemical serves as a versatile building block and key intermediate in advanced organic synthesis, particularly for constructing complex molecular architectures. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and fine chemical industries who require high-purity intermediates for the development of new active ingredients and functional materials.

Application

This compound's reactive dione and enol functionalities make it suitable for a range of synthetic applications. Key uses include:

• Pharmaceutical Intermediate: Synthesis of novel drug candidates, particularly those with complex heterocyclic or fused-ring systems.
• Agrochemical Research: Building block for developing new herbicides, fungicides, or plant growth regulators.
• Fine Chemical Synthesis: Production of specialty chemicals, dyes, pigments, and advanced organic materials.
• Academic & R&D: A valuable reagent in organic chemistry research for studying cycloaddition reactions, Michael additions, and other transformations.
• Ligand & Catalyst Precursor: Potential use in the preparation of chelating ligands for metal catalysis.

Basic Information

Product Name	4-Cyclopentene-1,3-Dione, 2-(1-Hydroxyethylidene)-4-Methyl-, (E)- (9Ci)
CAS No.	128886-98-6
Molecular Formula	C8H10O3
Molecular Weight	154.16 g/mol
Synonyms	(E)-2-(1-Hydroxyethylidene)-4-methylcyclopent-4-ene-1,3-dione; 2-(1-Hydroxyethylidene)-4-methyl-4-cyclopentene-1,3-dione; 4-Methyl-2-(1-hydroxyethylidene)-4-cyclopentene-1,3-dione; 4-Cyclopentene-1,3-dione, 2-(1-hydroxyethylidene)-4-methyl-, (E)-; 2-Acetyl-4-methyl-4-cyclopentene-1,3-dione enol; 4-Methyl-2-(1-hydroxyethylidene)cyclopent-4-ene-1,3-dione
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. We employ advanced analytical techniques including HPLC, GC, NMR, and IR spectroscopy to verify identity, purity, and consistency. Certificates of Analysis (COA) are available upon request, detailing batch-specific results for key parameters such as assay and impurity profiles. Our commitment to traceability and documentation supports your regulatory and research requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, handling and storage should minimize exposure to direct or strong artificial light.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
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.