3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid
Also known as: 3,4-Dihydro-3-oxo-2H-1,4-benzoxazine-6-carboxylic acid, 3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylic acid, 3-Oxo-3,4-dihydro-2H-benzo[1,4]oxazine-6-carboxylic acid, 3-Oxo-4H-1,4-benzoxazine-6-carboxylic acid, 6-Carboxy-2,3-dihydro-3-oxo-4H-1,4-benzoxazine, TIMTEC-BB SBB005401, BAS 06481766
3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid (CAS 134997-87-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H7NO4 and a molecular weight of 193.156 g/mol. Key properties include a melting point of 310-314℃, a boiling point of 471.4±45.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 238.9±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 134997-87-8
- Jingsj CID
- J-1138288-0
- Molecular Formula
- C9H7NO4
- Molecular Weight
- 193.156 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 310-314℃ |
|---|---|
| Boiling Point | 471.4±45.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 238.9±28.7 °C |
| Exact Mass | 193.037506 |
| PSA | 75.63000 |
| LogP | 0.87 |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.609 |
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 3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid?
The CAS number of 3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid is 134997-87-8.
What are the molecular formula and molecular weight of 3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid?
3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid has molecular formula C9H7NO4 and molecular weight 193.156 g/mol.
What are the upstream and downstream products of 3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid?
For 3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid, Upstream Products: Bromoacetyl bromide, 3-Amino-4-hydroxybenzoic acid, methyl 3-oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylate; Downstream Products: methyl 3-oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylate, ethyl 3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid (CAS 134997-87-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1138288-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.