1,2,3-Benzotriazin-4(3H)-one
Also known as: 1,2,3-Benzotriazin-4-one, 3,4-Dihydro-4-oxo-1,2,3-benzotriazine, 1,2,3-Benzotriazin-4-ol, 4-Ketobenz-1,2,3-triazine, 4-keto-(3H)-1,2,3-benzotriazine, 1H-1,2,3-benzotriazin-4-one, 3H-1,2,3-Benzotriazin-4-one
1,2,3-Benzotriazin-4(3H)-one (CAS 90-16-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H5N3O and a molecular weight of 147.13400 g/mol. Key properties include a melting point of 216-218 °C(lit.), a boiling point of 282.4ºC at 760 mmHg, a density of 1.47 g/cm3 and a flash point of 124.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 90-16-4
- Jingsj CID
- J-3551-8
- Molecular Formula
- C7H5N3O
- Molecular Weight
- 147.13400 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 216-218 °C(lit.) |
|---|---|
| Boiling Point | 282.4ºC at 760 mmHg |
| Density | 1.47 g/cm3 |
| Flash Point | 124.6ºC |
| Exact Mass | 147.04300 |
| PSA | 58.64000 |
| LogP | 0.31810 |
| Refractive Index | 1.73 |
Frequently Asked Questions
What is the CAS number of 1,2,3-Benzotriazin-4(3H)-one?
The CAS number of 1,2,3-Benzotriazin-4(3H)-one is 90-16-4.
What are the molecular formula and molecular weight of 1,2,3-Benzotriazin-4(3H)-one?
1,2,3-Benzotriazin-4(3H)-one has molecular formula C7H5N3O and molecular weight 147.13400 g/mol.
What are the upstream and downstream products of 1,2,3-Benzotriazin-4(3H)-one?
For 1,2,3-Benzotriazin-4(3H)-one, Upstream Products: 2-aminobenzohydrazide, 3-Hydroxy-1,2,3-benzotriazin-4(3H)-one, 1H-Indazol-3-amine; Downstream Products: 3,4-dihydro-1H-1,4-benzodiazepine-2,5-dione, 3-(hydroxymethyl)-1,2,3-benzotriazin-4(3H)-one, 3-(Chloromethyl)-1,2,3-benzotriazin-4(3H)-one.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,2,3-Benzotriazin-4(3H)-one (CAS 90-16-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3551-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.