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4,5-Diamino-6-hydroxypyrimidine

Also known as: 5,6-Diamino-4(1H)-pyrimidinone, 5,6-Diamino-4-hydroxypyrimidine, 5,6-Diamino-4-pyrimidinol, 5,6-diamino-1H-pyrimidin-4-one, 4(1H)-Pyrimidinone, 5,6-diamino-

4,5-Diamino-6-hydroxypyrimidine (CAS 1672-50-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H6N4O and a molecular weight of 126.11700 g/mol. Key properties include a melting point of 244 °C, a boiling point of 221.5ºC at 760mmHg, a density of 1.84g/cm3 and a flash point of 87.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1672-50-0
Jingsj CID
J-994278-3
Molecular Formula
C4H6N4O
Molecular Weight
126.11700 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point244 °C
Boiling Point221.5ºC at 760mmHg
Density1.84g/cm3
Flash Point87.8ºC
Exact Mass126.05400
PSA97.79000
LogP0.09670
Refractive Index2.009

Frequently Asked Questions

What is the CAS number of 4,5-Diamino-6-hydroxypyrimidine?

The CAS number of 4,5-Diamino-6-hydroxypyrimidine is 1672-50-0.

What are the molecular formula and molecular weight of 4,5-Diamino-6-hydroxypyrimidine?

4,5-Diamino-6-hydroxypyrimidine has molecular formula C4H6N4O and molecular weight 126.11700 g/mol.

What are the upstream and downstream products of 4,5-Diamino-6-hydroxypyrimidine?

For 4,5-Diamino-6-hydroxypyrimidine, Upstream Products: 5,6-diamino-2-sulfanylpyrimidin-4-ol; Downstream Products: 6-Chloropyrimidine-4,5-diamine, 4,5-diamino-6-mercaptopyrimidine, 2-amino-5-(trifluoromethyl)pyrazine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "4,5-Diamino-6-hydroxypyrimidine (CAS 1672-50-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-994278-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.