Description

3-Thiophenecarboxylicacid,Tetrahydro-4-Oxo-(9Ci) is a high-purity, heterocyclic building block of significant interest in advanced organic synthesis. This compound matters for its role as a key precursor in the development of novel pharmaceuticals and agrochemicals, where its unique fused thiophene-lactone structure enables the creation of complex molecular architectures. It is primarily needed by research institutions and industrial R&D departments focused on medicinal chemistry, material science, and fine chemical manufacturing.

Application

• Pharmaceutical Intermediate: A crucial building block for synthesizing novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring complex heterocyclic cores.
• Agrochemical Research: Serves as a precursor in the development of new herbicides, fungicides, and insecticides with potentially novel modes of action.
• Material Science: Used in the research and synthesis of advanced organic electronic materials, such as semiconductors and conductive polymers.
• Fine Chemical Synthesis: Employed as a specialized intermediate for creating complex molecules in custom synthesis and contract manufacturing projects.
• Academic & Industrial R&D: A valuable reagent for methodological studies in organic chemistry and for exploring new chemical spaces in drug discovery programs.

Basic Information

Product Name	3-Thiophenecarboxylicacid,Tetrahydro-4-Oxo-(9Ci)
CAS No.	126856-34-6
Molecular Formula	C7H8O3S
Molecular Weight	172.20 g/mol
Synonyms	4-Oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylic acid; 4-Oxo-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylic acid; Tetrahydro-4-oxo-3-thiophenecarboxylic acid; 3-Carboxy-4,5,6,7-tetrahydrobenzo[b]thiophen-4-one; 126856-34-6; 4-Oxo-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylic acid
EINECS	Contact for details

Quality Control

Our 3-Thiophenecarboxylicacid,Tetrahydro-4-Oxo-(9Ci) is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity suitable for research and development applications. Each lot undergoes comprehensive analytical characterization, including HPLC for purity and NMR for structural confirmation. Certificates of Analysis (COA) detailing all test results are provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from incompatible materials such as strong oxidizing agents, strong bases, and strong acids. For long-term storage, consider storing under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%

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