Pyrimido[4,5-d]pyrimidin-4(3H)-one
嘧啶并[4,5-d]嘧啶-4(3H)-酮
Also known as: 3H-pyrimido[4,5-d]pyrimidin-4-one, 8H-pyrimido[4,5-d]pyrimidin-5-one, Pyrimido[4,5-d]pyrimidin-4(1H)-one, Pyrimido[4,5-d]pyrimidin-4(3H)-one (6CI,8CI), NSC 403088
Pyrimido[4,5-d]pyrimidin-4(3H)-one (CAS 7403-26-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H4N4O and a molecular weight of 148.122 g/mol. It is also known as 3H-pyrimido[4,5-d]pyrimidin-4-one, 8H-pyrimido[4,5-d]pyrimidin-5-one and Pyrimido[4,5-d]pyrimidin-4(1H)-one. Key properties include a boiling point of 443.6±18.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 222.1±21.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7403-26-1
- Jingsj CID
- J-1494337-1
- Molecular Formula
- C6H4N4O
- Chinese Name
- 嘧啶并[4,5-d]嘧啶-4(3H)-酮
- Molecular Weight
- 148.122 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 443.6±18.0 °C at 760 mmHg |
|---|---|
| Density | 1.7±0.1 g/cm3 |
| Flash Point | 222.1±21.2 °C |
Frequently Asked Questions
What is the CAS number of Pyrimido[4,5-d]pyrimidin-4(3H)-one?
The CAS number of Pyrimido[4,5-d]pyrimidin-4(3H)-one is 7403-26-1.
What are the molecular formula and molecular weight of Pyrimido[4,5-d]pyrimidin-4(3H)-one?
Pyrimido[4,5-d]pyrimidin-4(3H)-one has molecular formula C6H4N4O and molecular weight 148.122 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Pyrimido[4,5-d]pyrimidin-4(3H)-one (CAS 7403-26-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1494337-1 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.