4-oxo-3,4-dihydrophthalazine-1-carboxylic acid
Also known as: 4-hydroxyphthalazine-1-carboxylic acid, 4-oxo-3,4-dihydro-1-phthalazinecarboxylic acid, 4-oxo-3,4-dihydro-phthalazine-1-carboxylic acid, 4-oxo-3H-phthalazine-1-carboxylic acid, 1-Phthalazinecarboxylic acid, 3,4-dihydro-4-oxo-
4-oxo-3,4-dihydrophthalazine-1-carboxylic acid (CAS 3260-44-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H6N2O3 and a molecular weight of 190.15600 g/mol. Key properties include a boiling point of 591.8ºC at 760mmHg, a density of 1.56g/cm3 and a flash point of 311.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3260-44-4
- Jingsj CID
- J-1118682-6
- Molecular Formula
- C9H6N2O3
- Molecular Weight
- 190.15600 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 591.8ºC at 760mmHg |
|---|---|
| Density | 1.56g/cm3 |
| Flash Point | 311.7ºC |
| Exact Mass | 190.03800 |
| PSA | 83.05000 |
| LogP | 0.62130 |
| Refractive Index | 1.71 |
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 4-oxo-3,4-dihydrophthalazine-1-carboxylic acid?
The CAS number of 4-oxo-3,4-dihydrophthalazine-1-carboxylic acid is 3260-44-4.
What are the molecular formula and molecular weight of 4-oxo-3,4-dihydrophthalazine-1-carboxylic acid?
4-oxo-3,4-dihydrophthalazine-1-carboxylic acid has molecular formula C9H6N2O3 and molecular weight 190.15600 g/mol.
What are the upstream and downstream products of 4-oxo-3,4-dihydrophthalazine-1-carboxylic acid?
For 4-oxo-3,4-dihydrophthalazine-1-carboxylic acid, Upstream Products: Naphthalene, 2-(Carboxycarbonyl)benzoic acid, 2-nitro-1H-indene-1,3(2H)-dione; Downstream Products: Methyl 4-oxo-3,4-dihydrophthalazine-1-carboxylate, 1(2H)-Phthalazinone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-oxo-3,4-dihydrophthalazine-1-carboxylic acid (CAS 3260-44-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1118682-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.