4,5-Diaminouracil

4,5-二氨基脲嘧啶

Also known as: 5,6-Diaminopyrimidine-2,4(1H,3H)-dione, 5,6-Diamino-2,4(1H,3H)-pyrimidinedione, 5,6-Diaminouracil, 2,4-Dihydroxy-5,6-diaminopyrimidine, 5,6-Diamino-1H-pyrimidine-2,4-dione, 5,6-Diaminopyrimidine-2,4-diol, 5,6-Diamino-2,4-dihydroxypyrimidine

4,5-Diaminouracil (CAS 3240-72-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H7ClN4O2 and a molecular weight of 178.577 g/mol. It is also known as 5,6-Diaminopyrimidine-2,4(1H,3H)-dione, 5,6-Diamino-2,4(1H,3H)-pyrimidinedione and 5,6-Diaminouracil. Key properties include a melting point of >250ºC, a boiling point of 778.7ºC at 760 mmHg and a flash point of 424.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3240-72-0
Jingsj CID
J-1516625-6
Molecular Formula
C4H7ClN4O2
Chinese Name
4,5-二氨基脲嘧啶
Molecular Weight
178.577 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point>250ºC
Boiling Point778.7ºC at 760 mmHg
Flash Point424.7ºC

Frequently Asked Questions

What is the CAS number of 4,5-Diaminouracil?

The CAS number of 4,5-Diaminouracil is 3240-72-0.

What are the molecular formula and molecular weight of 4,5-Diaminouracil?

4,5-Diaminouracil has molecular formula C4H7ClN4O2 and molecular weight 178.577 g/mol.

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

Last updated:

How to cite: Jingsj. "4,5-Diaminouracil (CAS 3240-72-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1516625-6 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.