Description

4H-Cyclopenta[C]Thiophene-6-Carbonitrile, 5-Amino- is a high-purity, multifunctional heterocyclic building block of significant interest in advanced organic synthesis. Its unique fused-ring structure, incorporating both thiophene and cyclopentene motifs, makes it a critical intermediate for constructing complex molecular architectures. This compound is primarily sought after by research and development teams in the pharmaceutical and agrochemical sectors for the development of novel active ingredients.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, inflammation, and oncology.
• Agrochemical Research: Used in the development of new-generation herbicides, fungicides, and insecticides, leveraging its heterocyclic core for bioactivity.
• Material Science: Acts as a monomer or functionalizing agent in the creation of organic semiconductors, conductive polymers, and non-linear optical (NLO) materials.
• Ligand Synthesis: Employed in the preparation of specialized ligands for catalysis and metal-organic frameworks (MOFs).
• Dye & Pigment Chemistry: Functions as a core structure for synthesizing advanced organic dyes and functional pigments.

Basic Information

Product Name	4H-Cyclopenta[C]Thiophene-6-Carbonitrile, 5-Amino-
CAS No.	40990-37-2
Molecular Formula	C8H6N2S
Molecular Weight	162.21 g/mol
Synonyms	5-Amino-4H-cyclopenta[c]thiophene-6-carbonitrile; 5-Amino-6-cyano-4H-cyclopenta[c]thiophene; 6-Cyano-5-amino-4H-cyclopenta[c]thiophene; 4H-Cyclopenta[c]thiophene-6-carbonitrile, 5-amino-; 5-Amino-4H-cyclopentathiophene-6-carbonitrile; 40990-37-2; 5-Amino-6-cyanocyclopenta[c]thiophene
EINECS	Contact for details

Quality Control

Our production of 4H-Cyclopenta[C]Thiophene-6-Carbonitrile, 5-Amino- adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Standard Grade)
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Single Impurity (HPLC)	≤ 1.0%

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