Thiophene Fine Chemicals & Sulfur Heterocycles

Welcome to OUHE Technology’s catalog of furan fine chemicals and oxygen heterocycles. We supply high-purity halothiophenes, thiophenecarboxylic acids, and thienyl building blocks essential for pharmaceutical APIs, agrochemical formulations, and organic optoelectronic materials. Use our advanced search bar to filter by CAS number or product name to find your specific requirements.

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Regioselective 2,5-Electrophilic Substitution and Benzene Bioisosterism

The five-membered sulfur heterocycle thiophene is a classic bioisostere of the benzene ring, widely used in API design to enhance metabolic profiles. Electrophilic aromatic substitution on the ring occurs with high regioselectivity at the 2- and 5-positions. At OUHE Technology, we supply structurally diverse thienyl intermediates with guaranteed isomeric purity, ensuring clean, high-yielding downstream conversions.

Essential Building Blocks for Optoelectronics and Cross-Coupling

  • Halothiophenes (Bromo-, Iodo-): Prime coupling partners designed for transition metal-catalyzed reactions, including Suzuki-Miyaura, Stille, and direct arylation.

  • Thiophenecarboxylic Acids: Carboxylic acid-functionalized derivatives utilized for amide couplings in pharmaceutical and agrochemical synthesis.

  • Conjugated Thiophene Monomers: High-purity monomers optimized for producing conducting polymers (like PEDOT) and organic semiconductors for OPVs, OFETs, and OLEDs.

Air-Odor Containment, Moisture Control, and Chromatographic Purity

Low molecular weight liquid thiophenes often possess highly volatile, sulfurous odors. We address this by utilizing double-sealed, moisture-barrier packaging under dry nitrogen to eliminate odor leaks and prevent trace moisture contamination. Every batch of our thiophene derivatives is verified using high-resolution GC or HPLC and NMR spectroscopy to ensure absolute purity before scaling from milligrams to pilot batches.

Frequently Asked Questions

A: Volatile thiophenes have a strong, characteristic sulfurous odor. We package our volatile thiophene derivatives in heavy-duty, nitrogen-purged amber glass bottles or lined steel drums with secure dual-seal caps, preventing both odor leakage and moisture degradation.

A2: Halothiophenes with close boiling points require rigorous validation. We verify precise substitution patterns (e.g., 2-bromo vs. 3-bromothiophene) using high-resolution capillary GC or HPLC and provide complete NMR and MS spectra for structural confirmation.

A: Yes. Electronic-grade materials require extremely low trace metal and halide impurities. We supply high-purity conjugated thiophene monomers (typically ≥98% or ≥99%) with detailed batch-specific COA data, optimized for polymerization and optoelectronic research.