![Molecular structure of 2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one (CAS 20348-09-8)](/images/chem_structures_svg/456/20348-09-8.svg)
2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one
Also known as: 2H-Pyrido[3,2-b][1,4]oxazin-3-one, 4H-Pyrido[3,2-b][1,4]oxazin-3-one, NSC 122276, 2,3-Dihydro-3-oxo-4H-pyrido[3,2-b]-1,4-oxazine
2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one (CAS 20348-09-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H6N2O2 and a molecular weight of 150.13500 g/mol. Key properties include a melting point of 204-206 °C(lit.), a boiling point of 384.159ºC at 760 mmHg and a density of 1.328g/cm3. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20348-09-8
- Jingsj CID
- J-1314731-4
- Molecular Formula
- C7H6N2O2
- Molecular Weight
- 150.13500 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 204-206 °C(lit.) |
|---|---|
| Boiling Point | 384.159ºC at 760 mmHg |
| Density | 1.328g/cm3 |
| Exact Mass | 150.04300 |
| PSA | 51.22000 |
| LogP | 0.55050 |
| Vapor Pressure | 0mmHg at 25°C |
| Refractive Index | 1.568 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one?
The CAS number of 2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one is 20348-09-8.
What are the molecular formula and molecular weight of 2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one?
2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one has molecular formula C7H6N2O2 and molecular weight 150.13500 g/mol.
Is 2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one hazardous?
2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one?
For 2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one, Upstream Products: 2-Amino-3-hydroxypyridine, Chloroacetic acid, Chloroacetyl chloride; Downstream Products: 7-bromo-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one, 6-nitro-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one, 3,4-Dihydro-2H-pyrido[3,2-b][1,4]oxazine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one (CAS 20348-09-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1314731-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.