CAS No. 2240-25-7

Batch: Purity:98
5-Bromocytosine Chemical Structure
Chemical Structure
Check the 5-Bromocytosine product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 2240-25-7
Molecular Formula

C4H4BrN3O

Molecular Weight (MW) 190.00
SMILES C1=NC(=O)NC(=C1Br)N

Biological Activity

5-Bromocytosine is a halogenated pyrimidine nucleobase derivative used in nucleic acid cross-linking synthesis under both aerobic and anaerobic conditions. As a product of myeloperoxidase-mediated oxidative damage, it forms during halogenation of nucleobases in inflammation, leading to structural alterations in nucleic acids and downstream DNA damage response activation. These cross-linking and incorporation properties render it a valuable chemical probe for studying nucleobase modifications and nucleic acid interactions. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 9 mg/mL (47.36 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

Reference

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Note: Technical data last updated: Sep 1, 2026.