Description

Hydrazinecarboxylic Acid, [(5-Ethyl-2-Thienyl)Methylene]-, Ethyl Ester (9Ci) is a specialized organic compound featuring a thiophene core functionalized with hydrazinecarboxylate and ethyl ester groups. This unique molecular architecture makes it a valuable intermediate for advanced pharmaceutical synthesis and fine chemical research. It is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing complex heterocyclic systems.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those containing thiophene or hydrazide motifs.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides that require specific heterocyclic scaffolds.
• Material Science Precursor: Serves as a monomer or functionalizing agent in the creation of advanced polymers and organic electronic materials.
• Chemical Synthesis Reagent: Employed in organic laboratories for the preparation of complex hydrazone derivatives and other nitrogen-containing compounds.
• Ligand Synthesis: Potential precursor for creating specialized ligands used in catalysis and metal-organic frameworks (MOFs).

Basic Information

Item	Detail
Product Name	Hydrazinecarboxylic Acid, [(5-Ethyl-2-Thienyl)Methylene]-, Ethyl Ester (9Ci)
CAS No.	549475-46-9
Molecular Formula	C11H16N2O2S
Molecular Weight	240.32 g/mol
Synonyms	(5-Ethyl-2-thienylmethylene)hydrazinecarboxylic acid ethyl ester; Ethyl (5-ethyl-2-thienylmethylene)carbazate; Ethyl N-[(5-ethyl-2-thienyl)methylene]hydrazinecarboxylate; Ethyl [(5-ethyl-2-thienyl)methylene]carbazate; Carbazic acid, [(5-ethyl-2-thienyl)methylene]-, ethyl ester (9CI); Ethyl 2-[(5-ethylthiophen-2-yl)methylidene]hydrazinecarboxylate
EINECS	Contact for details

Quality Control

Our production of Hydrazinecarboxylic Acid, [(5-Ethyl-2-Thienyl)Methylene]-, Ethyl Ester (9Ci) adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity. Each lot is characterized using advanced analytical techniques including HPLC, GC, NMR, and mass spectrometry. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This compound is easily oxidized and should be handled under an inert atmosphere for long-term stability. Keep away from heat, sparks, and open flame.

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%

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