5-Chloro-1,3-dihydro-1,3,3-trimethylspiro[2H-indole-2,3′-(3H)naphth[2,1-b](1,4)oxazine]
5-Chloro-1,3-dihydro-1,3,3-trimethylspiro[2H-indole-2,3′-(3H)naphth[2,1-b](1,4)oxazine] (CAS: 27333-50-2) is an organic compound with the molecular formula C22H19ClN2O. This spirocyclic molecule functions as a photochromic dye, exhibiting reversible colour changes upon exposure to light. Its primary applications are found in materials science, particularly within organic and printed electronics and photonic and optical materials research.
- IUPAC
- Photorome II
- Synonyms
- 3-trimethylspiro[2H-indole-2,3′-(3H)naphth[2,1-b](1,4)oxazine], Photorome II
oxazine] (C22H19ClN2O) — chemical structure, CAS 27333-50-2; Materials Science, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F27333-50-2.png&w=3840&q=75)
Photochromic Dye
Utilised for its ability to reversibly change colour when exposed to ultraviolet or visible light. This property is valuable for light-sensitive applications and smart materials.
Materials Science
An important compound for the development of advanced materials. Its photochromic characteristics make it suitable for research in responsive systems and optical devices.
Organic Electronics
Incorporated into organic electronic devices where light-induced changes in optical properties are desired. This includes applications in sensors and displays.
Photonic and Optical Materials
Investigated for its potential in photonic applications due to its light-interactive behaviour. It can be used in the creation of optical switches and data storage media.
| Molecular weight | 362.85 |
|---|---|
| Empirical formula | C22H19ClN2O |
| Application | Photochromic dye |
| Melting point | 182-183 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 5-Chloro-1,3-dihydro-1,3,3-trimethylspiro[2H-indole-2,3′-(3H)naphth[2,1-b](1,4)oxazine] used for?
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This compound is primarily used as a photochromic dye in materials science, organic and printed electronics, and photonic and optical materials research. It exhibits reversible colour changes upon light exposure.
What is the CAS number and molecular formula for this chemical?
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The CAS number is 27333-50-2 and the molecular formula is C22H19ClN2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound for research and development purposes. The specific grade and purity are available upon request. We do not represent this product as USP, BP, EP, or other pharmacopoeial grades.
How should this chemical be handled safely?
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This compound is classified with Warning signal word and hazards H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Handle with appropriate personal protective equipment, including a dust mask (e.g., N95), eyeshields, and gloves, in a well-ventilated area.
Is this chemical available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 5-Chloro-1,3-dihydro-1,3,3-trimethylspiro[2H-indole-2,3′-(3H)naphth[2,1-b](1,4)oxazine]. We can arrange for international shipment.
How can I request a sample or quote?
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To request a sample or a quote for 5-Chloro-1,3-dihydro-1,3,3-trimethylspiro[2H-indole-2,3′-(3H)naphth[2,1-b](1,4)oxazine], please contact our sales department through the website or by phone.
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