1,3,3-Trimethylindolino-β-naphthopyrylospiran
Also known as: 1,3,3-TRIMETHYLINDOLINO-BETA-NAPHTHOPYRYLOSPIRAN, 1',3',3'-trimethylspiro[benzo[f]chromene-3,2'-indole], 1',3',3'-Trimethylspiro[3H-naphtho[2,1-b]pyran-3,2'-indoline], 1,3-Dihydro-1,3,3-trimethylspiro[2H-indole-2,3'-[3H]naphtho[2,1-b]pyran], 1,3,3-Trimethylspiro[indoline-2,3'-[3H]naphth[2,1-b]pyran], 1',3',3'-Trimethylspiro[3H-naphtho[2,1-b]pyran-3,2'(3'H)-[1H]indole], 1,3,3-Trimethylindolino-β-naphthopyrylospiran [Photochromic Compound], 1,3,3-TriMethylindolino-β-naphthopyrylospiran [PhotochroMic CoMpound]
1,3,3-Trimethylindolino-β-naphthopyrylospiran (CAS 1592-43-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C23H21NO and a molecular weight of 327.41900 g/mol. Key properties include a melting point of 174ºC, a boiling point of 492.7ºC at 760 mmHg, a density of 1.22g/cm3 and a flash point of 142.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1592-43-4
- Jingsj CID
- J-1013823-5
- Molecular Formula
- C23H21NO
- Molecular Weight
- 327.41900 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 174ºC |
|---|---|
| Boiling Point | 492.7ºC at 760 mmHg |
| Density | 1.22g/cm3 |
| Flash Point | 142.8ºC |
| Exact Mass | 327.16200 |
| PSA | 12.47000 |
| LogP | 5.43430 |
| Vapor Pressure | 7.49E-10mmHg at 25°C |
| Refractive Index | 1.699 |
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1,3,3-Trimethylindolino-β-naphthopyrylospiran?
The CAS number of 1,3,3-Trimethylindolino-β-naphthopyrylospiran is 1592-43-4.
What are the molecular formula and molecular weight of 1,3,3-Trimethylindolino-β-naphthopyrylospiran?
1,3,3-Trimethylindolino-β-naphthopyrylospiran has molecular formula C23H21NO and molecular weight 327.41900 g/mol.
What are the upstream and downstream products of 1,3,3-Trimethylindolino-β-naphthopyrylospiran?
For 1,3,3-Trimethylindolino-β-naphthopyrylospiran, Upstream Products: 1,3,3-Trimethyl-2-methyleneindoline, 2-Hydroxy-1-naphthaldehyde; Downstream Products: 1,3,3-Trimethyl-2,3-dihydro-1H-indol-2-one, 1,3,3-Trimethyl-2-(formylmethylene)indoline.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,3,3-Trimethylindolino-β-naphthopyrylospiran (CAS 1592-43-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1013823-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.