Description

3-Thiophenecarboxylicacid,5-Ethyltetrahydro-4-(Hydroxyimino)-,Methylester(9Ci) is a specialized heterocyclic building block featuring a fused thiophene ring system with an oxime functional group. This compound is valued for its unique molecular architecture, which makes it a critical intermediate in advanced organic synthesis and pharmaceutical research. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing complex molecules and exploring novel chemical spaces.

Application

• Pharmaceutical Intermediate: A key synthon for the development of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas targeting the central nervous system or infectious diseases.
• Agrochemical Research: Serves as a precursor in the synthesis of new herbicides, fungicides, or insecticides, leveraging the biological activity of the thiophene scaffold.
• Material Science: Used in the research and development of advanced organic electronic materials, such as semiconductors or conductive polymers, due to the electron-rich thiophene core.
• Chemical Synthesis Building Block: Employed in academic and industrial laboratories for constructing complex heterocyclic compounds and for method development in organic chemistry.
• Ligand and Catalyst Development: The oxime and ester functionalities make it a candidate for developing novel chelating ligands or organocatalysts for asymmetric synthesis.

Basic Information

Product Name	3-Thiophenecarboxylicacid,5-Ethyltetrahydro-4-(Hydroxyimino)-,Methylester(9Ci)
CAS No.	66319-19-5
Molecular Formula	C9H13NO3S
Molecular Weight	215.27 g/mol
Synonyms	Methyl 5-ethyl-4-(hydroxyimino)tetrahydro-3-thiophenecarboxylate; 5-Ethyl-4-(hydroxyimino)tetrahydrothiophene-3-carboxylic acid methyl ester; 4-(Hydroxyimino)-5-ethyltetrahydro-3-thiophenecarboxylic acid methyl ester; Tetrahydrothiophene-3-carboxylic acid, 5-ethyl-4-(hydroxyimino)-, methyl ester; 66319-19-5; Methyl 5-ethyl-4-(hydroxyamino)tetrahydrothiophene-3-carboxylate
EINECS	Contact for details

Quality Control

Our production of 3-Thiophenecarboxylicacid,5-Ethyltetrahydro-4-(Hydroxyimino)-,Methylester(9Ci) adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for research and development applications. All materials are characterized using advanced analytical techniques including NMR, HPLC, and MS. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (typically 15-25°C). Keep away from strong oxidizing agents and incompatible materials. For long-term storage, consider inert atmosphere conditions to preserve stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
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.