Description

Propanoic Acid, 2-(Hydroxyimino)-, Methyl Ester, (E)- (9Ci) is a specialized organic compound belonging to the class of oxime esters, characterized by its distinct (E)-isomer configuration. This high-purity intermediate is critical for advanced organic synthesis, offering precise reactivity for constructing complex molecular architectures. It is primarily utilized by research institutions and industrial R&D departments in the pharmaceutical and agrochemical sectors for developing novel active ingredients and fine chemicals. CAS No. 199434-50-9.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of novel drug candidates, particularly in medicinal chemistry research.
• Agrochemical Synthesis: Used in the development and production of advanced pesticides, herbicides, and plant growth regulators.
• Organic Synthesis Reagent: Acts as a versatile reagent for introducing the oxime ester functional group in complex organic transformations.
• Chemical Research: Employed in academic and industrial laboratories for method development and exploring new reaction pathways.
• Fine Chemical Production: Integral in the manufacture of specialty chemicals, dyes, and performance materials requiring high-purity intermediates.

Basic Information

Product Name	Propanoic Acid, 2-(Hydroxyimino)-, Methyl Ester, (E)- (9Ci)
CAS No.	199434-50-9
Molecular Formula	C4H7NO3
Molecular Weight	117.10 g/mol
Synonyms	(E)-2-(Hydroxyimino)propanoic acid methyl ester; Methyl (E)-2-(hydroxyimino)propanoate; Methyl 2-(hydroxyimino)propionate; (E)-Methyl 2-(hydroxyimino)propanoate; 2-(Hydroxyimino)propionic acid methyl ester; Propanoic acid, 2-(hydroxyimino)-, methyl ester, (E)-; Methyl (E)-2-(hydroxyimino)propionate; Oxime ester intermediate
EINECS	Contact for details

Quality Control

Our Propanoic Acid, 2-(Hydroxyimino)-, Methyl Ester, (E)- (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and isomeric integrity. Certificates of Analysis (COA) with detailed specifications are provided for every shipment to guarantee batch-to-batch consistency and traceability for our global B2B clients.

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 property of being easily oxidized, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Isomeric Purity (E-isomer)	≥ 99.0%
Melting Point	Contact for details
Loss on Drying	≤ 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.