Description

3,4,5,13-Tetrahydro-3H-2-Benzothieno(5,4-D)Naphtho(1,2-B)Pyran CAS NO 135643-41-3 is a complex, polycyclic organic compound belonging to the benzothienonaphthopyran class. This specialty chemical is a critical advanced intermediate in the synthesis of novel, high-value molecules, offering a unique structural scaffold for research and development. It is primarily sought after by pharmaceutical R&D and fine chemical synthesis teams focused on developing new active pharmaceutical ingredients (APIs) and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the research and synthesis of novel drug candidates, particularly in oncology and central nervous system (CNS) therapeutic areas.
• Organic Light-Emitting Diode (OLED) Materials Research: Used in the development of new electron-transport or host materials due to its fused aromatic and heterocyclic structure.
• Advanced Material Science: Investigated as a precursor for creating specialized polymers or coatings with specific optical or electronic properties.
• Academic & Industrial R&D: A valuable compound for methodological studies in organic synthesis, including novel cyclization and functionalization reactions.
• Ligand Synthesis: Potential use in constructing complex ligands for catalysis or metal-organic frameworks (MOFs).
• Fluorescent Probe Development: Its rigid, conjugated structure makes it a candidate for developing new fluorescent markers or sensors.

Basic Information

Product Name	3,4,5,13-Tetrahydro-3H-2-Benzothieno(5,4-D)Naphtho(1,2-B)Pyran
CAS No.	135643-41-3
Molecular Formula	C19H14OS
Molecular Weight	290.38 g/mol
Synonyms	3,4,5,13-Tetrahydro-3H-2-benzothieno[5,4-d]naphtho[1,2-b]pyran; Benzothienonaphthopyran derivative; 3H-2-Benzothieno(5,4-d)naphtho(1,2-b)pyran, 3,4,5,13-tetrahydro-; 135643-41-3; Tetrahydrobenzothienonaphthopyran
EINECS	Contact for details

Quality Control

Our production of 3,4,5,13-Tetrahydro-3H-2-Benzothieno(5,4-D)Naphtho(1,2-B)Pyran adheres to strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via NMR and MS. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all specified parameters to ensure the material meets your research and development requirements.

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 heat, sparks, and open flame. Due to its light-sensitive nature, handling and packaging should minimize exposure to direct light.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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