5-Bromocytosine

5-溴胞嘧啶

Also known as: 4-Amino-5-bromo-2(1H)-pyrimidinone, 4-Amino-5-bromo-2-hydroxypyrimidine, 4-Amino-5-bromopyrimidin-2(1H)-one, 6-Amino-5-bromopyrimidin-2(1H)-one, 2(1H)-Pyrimidinone, 4-amino-5-bromo-, Cytosine, 5-bromo-

5-Bromocytosine (CAS 2240-25-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H4BrN3O and a molecular weight of 190.00 g/mol. It is also known as 4-Amino-5-bromo-2(1H)-pyrimidinone, 4-Amino-5-bromo-2-hydroxypyrimidine and 4-Amino-5-bromopyrimidin-2(1H)-one. Key properties include a melting point of 240-243ºC, a boiling point of 359.5±42.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 171.2±27.9 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2240-25-7
Jingsj CID
J-18230-4
Molecular Formula
C4H4BrN3O
Chinese Name
5-溴胞嘧啶
Molecular Weight
190.00 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point240-243ºC
Boiling Point359.5±42.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point171.2±27.9 °C

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

Frequently Asked Questions

What is the CAS number of 5-Bromocytosine?

The CAS number of 5-Bromocytosine is 2240-25-7.

What are the molecular formula and molecular weight of 5-Bromocytosine?

5-Bromocytosine has molecular formula C4H4BrN3O and molecular weight 190.00 g/mol.

Is 5-Bromocytosine hazardous?

5-Bromocytosine has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "5-Bromocytosine (CAS 2240-25-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18230-4 (accessed 2026-10-24).

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