Description

8-Chloro-3-(Diethylamino)-6-Methylspiro[11H-[1]Benzothieno[3,2-B][1]Benzopyran-11,1'(3'H)-Isobenzofuran]-3'-One is a sophisticated spirocyclic organic compound that serves as a critical advanced intermediate in fine chemical synthesis. Its complex heterocyclic structure, featuring a benzothienobenzopyran fused to an isobenzofuranone, makes it a valuable building block for research and development in photochromic materials and specialty dyes. This high-purity intermediate is essential for manufacturers and research institutions developing novel functional materials, optical switches, and sensors. The compound is supplied with a focus on consistent quality and reliable supply chain to support complex, multi-step synthesis processes.

Application

• Photochromic Material Synthesis: A key precursor for developing advanced photochromic dyes and pigments used in lenses, optical filters, and smart windows.
• Organic Electronics: Serves as a building block for novel organic semiconductors and light-responsive components in electronic devices.
• Non-linear Optical (NLO) Materials: Used in R&D for creating materials with specific light-modulating properties for telecommunications and laser technology.
• Chemical Sensing: Employed in the development of molecular probes and sensor materials that change properties in response to specific stimuli.
• Advanced Polymer Modification: Acts as a functional monomer or cross-linking agent to impart light-responsive characteristics to specialty polymers.
• Academic & Industrial Research: A crucial compound for fundamental studies in organic synthesis, photochemistry, and material science.

Basic Information

Product Name	8-Chloro-3-(Diethylamino)-6-Methylspiro[11H-[1]Benzothieno[3,2-B][1]Benzopyran-11,1'(3'H)-Isobenzofuran]-3'-One
CAS No.	32492-78-7
Molecular Formula	C28H24ClNO3S
Molecular Weight	490.01 g/mol
Synonyms	8-Chloro-3-(diethylamino)-6-methylspiro[benzothieno[3,2-b][1]benzopyran-11,1'-isobenzofuran]-3'-one; Spiro[11H-[1]benzothieno[3,2-b][1]benzopyran-11,1'(3'H)-isobenzofuran]-3'-one, 8-chloro-3-(diethylamino)-6-methyl-; Photochromic Spiro Compound Intermediate; Light-Sensitive Spiro Heterocycle; Benzothienobenzopyran Isobenzofuranone Derivative
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for purity, NMR and IR for structural confirmation, and residual solvent analysis. A detailed Certificate of Analysis (COA) documenting all test results is provided with every shipment. We support custom synthesis and can tailor specifications, including purity grades and impurity profiles, to meet specific research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep the container tightly sealed when not in use to protect from moisture and atmospheric contaminants. Store away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 0.5%
Residual Solvents (GC)	Meets ICH Q3C guidelines
Heavy Metals	≤ 20 ppm

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