Description

4H-Cyclopenta[B]Thiophene-3-Carboxylicacid,5,6-Dihydro-2-[[[[(4-Methylphenyl)Methylene]Hydrazino]Oxoacetyl]Amino]-,Ethylester(9Ci) is a high-purity, advanced pharmaceutical intermediate with a complex heterocyclic structure. This compound is valued for its role as a critical building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly in research targeting specific therapeutic areas. It is primarily needed by pharmaceutical R&D laboratories and fine chemical manufacturers engaged in developing new drug candidates.

Application

• Pharmaceutical Intermediate: A key precursor in the multi-step synthesis of novel drug candidates, especially in medicinal chemistry research.
• Organic Synthesis Building Block: Used in constructing complex heterocyclic frameworks for new chemical entities (NCEs) in discovery programs.
• Agrochemical Research: Potential application as an intermediate in the development of new crop protection agents with unique modes of action.
• Material Science: Serves as a specialized monomer or additive in the research of advanced organic electronic materials.
• Contract Research & Manufacturing (CRAM): Supplied to organizations providing custom synthesis and process development services.
• Academic Research: Utilized in university and institutional labs for studies in synthetic methodology and heterocyclic chemistry.

Basic Information

Product Name	4H-Cyclopenta[B]Thiophene-3-Carboxylicacid,5,6-Dihydro-2-[[[[(4-Methylphenyl)Methylene]Hydrazino]Oxoacetyl]Amino]-,Ethylester(9Ci)
CAS No.	606487-19-8
Molecular Formula	C20H19N3O4S
Molecular Weight	397.45 g/mol
Synonyms	Ethyl 2-[[2-[(4-methylphenyl)methylidene]hydrazinyl]-2-oxoacetamido]-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate; 4H-Cyclopenta[b]thiophene-3-carboxylic acid, 5,6-dihydro-2-[[[[(4-methylphenyl)methylene]hydrazino]oxoacetyl]amino]-, ethyl ester; 606487-19-8; Ethyl 5,6-dihydro-2-{[(2-{[(4-methylphenyl)methylidene]amino}hydrazinyl)carbonyl]formamido}-4H-cyclopenta[b]thiophene-3-carboxylate; AI3-63575; SCHEMBL21805527; ZINC000003869726; AKOS005247209.
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical characterization, including HPLC for purity, NMR, and MS for structural confirmation, to ensure identity and consistency. Certificates of Analysis (COA) with full analytical data are provided for traceability and to support your regulatory and R&D documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). This material is moisture-sensitive (hygroscopic) and should be handled under an inert atmosphere for prolonged exposure to maintain stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 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.