1′,3′-Dihydro-1′,3′,3′-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2′-(2H)-indole]
1′,3′-Dihydro-1′,3′,3′-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2′-(2H)-indole] (CAS: 1498-88-0, C19H18N2O3) is a photochromic spiropyran dye. This organic compound exhibits reversible colour changes upon exposure to UV light, making it valuable in materials science. Its primary applications are found in organic electronics, photonic materials, and the development of photochromic and thermochromic systems. The material is supplied with an assay of 98%.
- Synonyms
- 3′-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2′-(2H)-indole]1498-88-0C19H18N2O3
![1′,3′-Dihydro-1′,3′,3′-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2′-(2H)-indole] (C19H18N2O3) — chemical structure, CAS 1498-88-0; Materials Science, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1498-88-0.png&w=3840&q=75)
Photochromic Materials
Utilised as a photochromic dye, this spiropyran derivative undergoes reversible colour transitions when exposed to ultraviolet radiation. This property is fundamental for its application in smart materials and light-responsive systems.
Organic Electronics
As a component in organic and printed electronics, its photochromic characteristics can be leveraged for developing novel display technologies or light-sensitive electronic components.
Photonic and Optical Applications
The compound's ability to alter its optical properties under light stimulation makes it suitable for advanced photonic and optical material research and development.
Research and Development
Serves as a key research chemical for investigating photochromic mechanisms, molecular switches, and the synthesis of functional organic materials.
| Molecular weight | 322.36 |
|---|---|
| Empirical formula | C19H18N2O3 |
| Assay | 98% |
| Application | Photochromic spiropyran dye. |
| Melting point | 179-180 °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.
| Absorption | λmax 242 nm in ethanol |
|---|
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 1′,3′-Dihydro-1′,3′,3′-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2′-(2H)-indole] used for?
+
This compound is primarily used as a photochromic spiropyran dye in applications related to materials science, organic electronics, and photonic materials, owing to its reversible colour change properties when exposed to UV light.
What are the CAS number and molecular formula for this chemical?
+
The CAS number is 1498-88-0, and the molecular formula is C19H18N2O3.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies this chemical with an assay of 98%. TSS does not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should this chemical be handled safely?
+
Handle with appropriate personal protective equipment, including a dust mask (N95 US type), eyeshields, and gloves. Avoid inhalation of dust and ensure adequate ventilation as it may cause respiratory irritation (H335), skin irritation (H315), and serious eye irritation (H319).
Can Tech Serve Solutions export this chemical internationally?
+
Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals.
How can I request a sample or a quote?
+
Please contact our sales team through the website or by phone to request a sample or a quotation for this product.
▶ Related products

Poly(3-hexylthiophene-2,5-diyl)
Organic & Printed Electronics
![[6,6]-Phenyl C71 butyric acid methyl ester, mixture of isomers — chemical structure, CAS 609771-63-3; Organic & Printed Electronics, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F609771-63-3.png&w=3840&q=75)
[6,6]-Phenyl C71 butyric acid methyl ester, mixture of isomers
Organic & Printed Electronics

6,13-Bis(triisopropylsilylethynyl)pentacene
Organic & Printed Electronics
![[6,6]-Phenyl C61 butyric acid methyl ester — chemical structure, CAS 160848-22-6; Organic & Printed Electronics, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F160848-22-6.png&w=3840&q=75)
[6,6]-Phenyl C61 butyric acid methyl ester
Organic & Printed Electronics

Fullerene-C60
C60
Organic & Printed Electronics
Cholesteryl hemisuccinate
C31H50O4
Organic & Printed Electronics
3,4-Ethylenedioxythiophene
Organic & Printed Electronics

Di-tetrabutylammonium cis-bis(isothiocyanato)bis(2,2′-bipyridyl-4,4′-dicarboxylato)ruthenium(II)
Organic & Printed Electronics
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis