Description

5-Hydroxythionaphthene is a specialized organic compound belonging to the thionaphthene class, characterized by a hydroxyl substituent. This structural motif makes it a valuable intermediate in the synthesis of complex heterocyclic molecules, particularly in the development of dyes, pigments, and advanced pharmaceutical agents. It is primarily sought after by research institutions and industrial manufacturers in the fine chemical, agrochemical, and material science sectors for its role in creating novel compounds with specific optical or biological properties.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), particularly those with heterocyclic cores.
• Dye & Pigment Synthesis: Serves as a crucial precursor for manufacturing specialized dyes, optical brighteners, and high-performance pigments.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and plant growth regulators that require complex sulfur-containing heterocycles.
• Material Science: Investigated for use in organic semiconductors, photoconductive materials, and other advanced electronic applications.
• Chemical Research: Employed as a standard or reagent in organic synthesis and methodological studies for constructing benzothiophene derivatives.
• Fluorescent Probe Development: Utilized in the design of molecular probes and sensors due to its inherent fluorescent properties when incorporated into larger structures.

Basic Information

Product Name	5-Hydroxythionaphthene
CAS No.	19301-35-0
Molecular Formula	C8H6OS
Molecular Weight	150.20 g/mol
Synonyms	5-Hydroxybenzo[b]thiophene; 5-Hydroxy-1-benzothiophene; 1-Benzothiophen-5-ol; 5-Hydroxythianaphthene; 5-Hydroxybenzothiophene; 5-Benzothiophenol; 5-HBT
EINECS	242-945-6

Quality Control

Our 5-Hydroxythionaphthene is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity verification and identity confirmation via spectroscopic methods (IR, NMR), to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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