![Molecular structure of 2,3-dihydro-1,4-dioxino[2,3-b]pyridine (CAS 129421-32-5)](/images/chem_structures_svg/361/129421-32-5.svg)
2,3-dihydro-1,4-dioxino[2,3-b]pyridine
Also known as: 1,4-Dioxino[2,3-b]pyridine, 2,3-dihydro-, 2,3-Dihydro-[1,4]dioxino[2,3-b]pyridine, 2,3-Dihydro[1,4]dioxino[2,3-b]pyridine
2,3-dihydro-1,4-dioxino[2,3-b]pyridine (CAS 129421-32-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H7NO2 and a molecular weight of 137.136 g/mol. Key properties include a boiling point of 230.4±19.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 83.8±11.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 129421-32-5
- Jingsj CID
- J-1083102-4
- Molecular Formula
- C7H7NO2
- Molecular Weight
- 137.136 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 230.4±19.0 °C at 760 mmHg |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 83.8±11.8 °C |
| Exact Mass | 137.047684 |
| PSA | 31.35000 |
| LogP | 1.51 |
| Vapor Pressure | 0.1±0.4 mmHg at 25°C |
| Refractive Index | 1.542 |
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 2,3-dihydro-1,4-dioxino[2,3-b]pyridine?
The CAS number of 2,3-dihydro-1,4-dioxino[2,3-b]pyridine is 129421-32-5.
What are the molecular formula and molecular weight of 2,3-dihydro-1,4-dioxino[2,3-b]pyridine?
2,3-dihydro-1,4-dioxino[2,3-b]pyridine has molecular formula C7H7NO2 and molecular weight 137.136 g/mol.
What are the upstream and downstream products of 2,3-dihydro-1,4-dioxino[2,3-b]pyridine?
For 2,3-dihydro-1,4-dioxino[2,3-b]pyridine, Upstream Products: 2,3-Dihydroxypyridine, 1,2-Dibromoethane, 3-Fluoro-4-nitrobenzonitrile.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,3-dihydro-1,4-dioxino[2,3-b]pyridine (CAS 129421-32-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1083102-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.