Description

1,3,3-Trimethylindolinobenzopyrylospiran is a specialized organic compound belonging to the spirooxazine class of photochromic molecules. This compound matters for its unique ability to undergo a reversible color change when exposed to specific wavelengths of light, making it a critical functional material. Industries requiring advanced light-responsive technologies, such as optical data storage, smart lenses, and security inks, are the primary users of this high-value chemical.

Application

• Photochromic Lenses and Films: As a key active ingredient in ophthalmic lenses, sunglasses, and architectural films that darken upon exposure to UV light.
• Optical Data Storage Media: Utilized in the development of rewritable optical discs and holographic memory systems due to its reversible photochromism.
• Security Printing and Anti-Counterfeiting: Incorporated into inks for banknotes, certificates, and brand protection labels where verification under UV light is required.
• Molecular Switches and Sensors: Serves as a light-activated component in advanced sensor technologies and molecular-scale switching devices.
• Novelty and Fashion Items: Used in textiles, cosmetics, and toys that feature color-changing properties.
• Research and Development: A vital compound for academic and industrial R&D in photochemistry, materials science, and nanotechnology.

Basic Information

Product Name	1,3,3-Trimethylindolinobenzopyrylospiran
CAS No.	1485-92-3
Molecular Formula	C23H19NO
Molecular Weight	325.40 g/mol
Synonyms	Spiro[2H-1-benzopyran-2,2'-indoline], 1,3,3-Trimethyl-; 1,3,3-Trimethylspiro[indoline-2,3'-[3H]naphth[2,1-b][1,4]oxazine]; Photochromic Spirooxazine; Spirooxazine, 1,3,3-trimethyl-; SO-1; SO1; Spiro(2H-1-benzopyran-2,2'-indoline), 1,3,3-trimethyl-; 1,3,3-Trimethylindolino-6'-nitrobenzopyrylospiran (related variant)
EINECS	Contact for details

Quality Control

Our 1,3,3-Trimethylindolinobenzopyrylospiran is manufactured under strict quality protocols to ensure batch-to-batch consistency and high performance in sensitive photochromic applications. We provide comprehensive Certificates of Analysis (COA) detailing purity, photochromic performance metrics (e.g., fade rate, fatigue resistance), and impurity profiles. Our quality system is designed to meet the stringent requirements of advanced material and optical industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its light-sensitive nature, all handling and packaging should be conducted under yellow or red safelight conditions to prevent premature activation and degradation.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Melting Point	175 - 185 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Photochromic Performance	Contact for details

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