Description

1-(β-Carboxyethyl)-3,3-Dimethyl-6'-Nitrospiro(Indoline- 2,2'-2H-Benzopyran) is a specialized photochromic organic compound belonging to the spirooxazine class. Its core value lies in its reversible color change upon exposure to specific wavelengths of light, making it a critical functional material for advanced optical applications. This compound is essential for manufacturers and R&D teams in the photochromic materials, specialty coatings, and optical data storage sectors seeking high-performance, light-responsive components.

Application

This photochromic spirooxazine derivative is engineered for high-value applications where controlled, reversible optical properties are required.

• Photochromic Lenses and Ophthalmic Products: As a key active ingredient in plastic lenses for sunglasses and adaptive eyewear that darken upon UV exposure.
• Smart Windows and Optical Filters: For developing coatings and films that modulate light transmission in architectural glass, automotive sunroofs, and protective visors.
• Security Printing and Anti-Counterfeiting Inks: Utilized in high-security documents, banknotes, and product labels where a verifiable, light-induced color shift provides authentication.
• Optical Data Storage and Molecular Switches: Serving as a potential component in photoswitchable systems for high-density memory devices and photonic logic gates.
• Novel Sensor Materials: For research into chemical and biological sensors where a photochromic response indicates the presence of a specific analyte.
• Advanced Coatings and Paints: Incorporation into industrial or artistic coatings to create color-changing effects for aesthetic or functional purposes.

Basic Information

Product Name	1-(β-Carboxyethyl)-3,3-Dimethyl-6'-Nitrospiro(Indoline- 2,2'-2H-Benzopyran)
CAS No.	55779-26-5
Molecular Formula	C21H20N2O5
Molecular Weight	380.40 g/mol
Synonyms	6'-Nitro-1'-(3-carboxypropyl)-3,3-dimethylspiro[2H-1-benzopyran-2,2'-indoline]; 1-(3-Carboxypropyl)-3,3-dimethyl-6-nitrospiro[indoline-2,3'-[3H]naphth[2,1-b][1,4]oxazine]; Spirooxazine derivative, photochromic; 1'-(3-Carboxypropyl)-3,3-dimethyl-6-nitrospiro(2H-1-benzopyran-2,2'-indoline); 6-Nitro-1-(3-carboxypropyl)-3,3-dimethylspiro(indoline-2,3'-[3H]naphth[2,1-b][1,4]oxazine); Photochromic Spirooxazine Dye
EINECS	Contact for details

Quality Control

Our production of this high-purity photochromic compound adheres to stringent quality protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and isomer content, NMR and IR for structural confirmation, and spectrophotometry to verify photochromic performance parameters such as fade rate and coloration intensity. Certificates of Analysis (COA) detailing all specifications are provided with each shipment to ensure traceability and compliance with your R&D or manufacturing requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is strictly light-sensitive (protect from all light exposure) to prevent premature degradation of its photochromic properties. For long-term storage, consider an inert atmosphere to minimize potential oxidation.

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 (δAmax)	To be specified per grade
Fade Half-Life (t1/2)	To be specified per grade

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