Description

5-Chloro-1,3-Dihydro-1,3,3-Trimethylspiro[2 H-Indole-2,3'-[3 H]Naphth[2,1-B][1,4]Oxazine] is a high-value photochromic organic compound, widely recognized for its reversible color change upon exposure to specific light wavelengths. This property makes it a critical functional material for advanced optical applications, where precise control over light transmission is required. It is primarily sought by manufacturers in the photochromic lens, optical data storage, and smart material sectors.

Application

• Photochromic Ophthalmic Lenses: A key active ingredient in plastic and glass lenses that automatically darken in sunlight and clear indoors.
• Optical Data Storage Media: Used in the development of rewritable optical discs and holographic memory systems.
• Smart Windows & Coatings: Incorporated into films and coatings for windows that adjust their tint based on light intensity.
• Security Printing & Inks: Employed in anti-counterfeiting inks for banknotes, documents, and high-security packaging.
• Photochromic Textiles & Polymers: Used to create fabrics and plastic materials that change color with UV exposure.
• Chemical Sensors & Probes: Serves as a light-sensitive component in molecular probes for analytical chemistry and bio-imaging.

Basic Information

Product Name	5-Chloro-1,3-Dihydro-1,3,3-Trimethylspiro[2 H-Indole-2,3'-[3 H]Naphth[2,1-B][1,4]Oxazine]
CAS No.	27333-50-2
Molecular Formula	C23H21ClN2O
Molecular Weight	376.88 g/mol
Synonyms	5-Chloro-1,3,3-trimethylspiro[indoline-2,3'-[3H]naphth[2,1-b][1,4]oxazine]; Spirooxazine, 5-Chloro-1,3,3-trimethyl-; Photochromic Spirooxazine; 5-Chloro-1,3,3-trimethylspiro[indoline-2,3'-[3H]phenanthro[9,10-b][1,4]oxazine]; 5-Chloro-1,3,3-trimethylspiro[indoline-2,3'-[3H]naphtho[2,1-b]pyran]; (common photochromic dye class name)
EINECS	Contact for details

Quality Control

Our 5-Chloro-1,3-Dihydro-1,3,3-Trimethylspiro[2 H-Indole-2,3'-[3 H]Naphth[2,1-B][1,4]Oxazine] is manufactured under strict quality management systems to ensure batch-to-batch consistency and high performance. We provide comprehensive Certificates of Analysis (COA) detailing purity, photochromic performance metrics, and impurity profiles. Our quality protocols are designed to meet the stringent requirements of the optical materials and specialty chemical industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This compound is light-sensitive (store away from light) and should be handled under conditions that minimize prolonged exposure to ambient light to preserve its photochromic properties.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Photochromic Performance (δOD)	Contact for details
Fade Half-Life (t1/2)	Contact for details

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