Description

2,3-Butanedione, Mono(o-Ethyloxime), (E)- (9Ci) is a specialized oxime derivative of the flavor compound diacetyl. This high-purity intermediate matters for its role in the controlled synthesis of flavor and fragrance compounds, pharmaceuticals, and advanced organic materials. It is primarily needed by R&D chemists and production specialists in the flavor & fragrance, pharmaceutical, and fine chemical synthesis industries. The product is supplied with a Certificate of Analysis to ensure batch-to-batch consistency for critical applications.

Application

• Flavor & Fragrance (F&F) Intermediate: A key building block for synthesizing specific flavoring agents and aroma chemicals, particularly those requiring the butanedione (diacetyl) backbone with modified functionality.
• Pharmaceutical Synthesis: Serves as a versatile synthon or protecting group intermediate in the multi-step synthesis of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Organic Synthesis & Research: Used in academic and industrial R&D laboratories for exploring new reaction pathways, creating novel heterocyclic compounds, and developing advanced materials.
• Agrochemical Intermediates: Employed in the production of specialized pesticides, herbicides, or plant growth regulators where its oxime functionality is integral to the final product's activity.
• Coordination Chemistry & Metal Chelation: Acts as a ligand precursor for forming complexes with various metal ions, useful in catalysis or material science applications.

Basic Information

Product Name	2,3-Butanedione, Mono(o-Ethyloxime), (E)- (9Ci)
CAS No.	64953-99-7
Molecular Formula	C6H11NO2
Molecular Weight	129.16 g/mol
Synonyms	(E)-2,3-Butanedione Mono(O-ethyloxime); Diacetyl Mono(O-ethyloxime); 2,3-Butanedione 2-(O-Ethyloxime); 2-Butanone, 3-(ethylimino)-; Butane-2,3-dione O-ethyloxime; 1,2-Diacetylethane Monooxime O-Ethyl Ether; (E)-1,2-Dihydroxy-1,2-ethanedione O-ethyloxime
EINECS	Contact for details

Quality Control

Our 2,3-Butanedione, Mono(o-Ethyloxime), (E)- (9Ci) is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets the high standards required for synthesis and research. A detailed Certificate of Analysis (COA) documenting purity, physical properties, and test results is provided with each shipment and is available upon request.

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, containers should be kept in the original packaging or an opaque secondary container until use.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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