Description

Diethyl Ketomalonate Monohydrate is a versatile and highly reactive organic building block, primarily serving as a key intermediate in the synthesis of complex heterocyclic compounds. Its value lies in its bifunctional structure, featuring both a ketone and two ester groups, which allows for selective and sequential chemical transformations. This compound is essential for research and production chemists in the pharmaceutical, agrochemical, and fine chemical industries, where it is used to construct active pharmaceutical ingredients (APIs), advanced materials, and specialized ligands.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of various heterocyclic scaffolds, including pyrazoles, isoxazoles, and fused ring systems found in active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides, leveraging its reactivity to create complex molecular architectures.
• Fine Chemical Production: Serves as a building block for dyes, pigments, and specialty chemicals requiring specific ketone and ester functionalities.
• Coordination Chemistry: Acts as a ligand precursor or a chelating agent in the preparation of metal-organic frameworks (MOFs) and catalysts.
• Academic & R&D: A valuable reagent in organic chemistry research for methodology development and the exploration of new reaction pathways.

Basic Information

Product Name	Diethyl Ketomalonate Monohydrate
CAS No.	133318-40-8
Molecular Formula	C7H12O6 • H2O
Molecular Weight	192.17 g/mol (Anhydrous basis: 174.15 g/mol)
Synonyms	Diethyl 2-oxomalonate monohydrate; Ketomalonic acid diethyl ester monohydrate; Oxopropanedioic acid diethyl ester monohydrate; Ethyl ketomalonate monohydrate; Diethyl oxomalonate hydrate; Diethyl mesoxalate monohydrate; 2-Oxopropanedioic acid diethyl ester monohydrate
EINECS	Contact for details

Quality Control

Our Diethyl Ketomalonate Monohydrate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for synthetic intermediates. A comprehensive Certificate of Analysis (COA) detailing purity (typically by HPLC or titration), water content (KF), and identification (IR, NMR) is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be kept in opaque or amber packaging.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC/Titration)	≥ 98.0%
Water Content (KF)	8.0 - 10.0% (Theoretical for monohydrate: ~9.4%)
Melting Point	Contact for details
Residue on Ignition	< 0.1%

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