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4-Amino-5-bromopyrimidin-2(1H)-one

Cat No.:V65329 Purity: ≥98%
4-Amino-5-bromopyrimidin-2(1H)-one is a biochemical compound that may be utilized as a biomaterial or organic/chemical reagent for biomedical research.
4-Amino-5-bromopyrimidin-2(1H)-one
4-Amino-5-bromopyrimidin-2(1H)-one Chemical Structure CAS No.: 2240-25-7
Product category: Biochemical Assay Reagents
This product is for research use only, not for human use. We do not sell to patients.
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Product Description
4-Amino-5-bromopyrimidin-2(1H)-one is a biochemical compound that may be utilized as a biomaterial or organic/chemical reagent for biomedical research.
4-Amino-5-bromopyrimidin-2(1H)-one (5-Bromocytosine, CAS 2240-25-7) is a biochemical reagent and pyrimidine derivative used in life science research. It has a molecular weight of 189.99 g/mol and the formula C₄H₄BrN₃O. It appears as a solid and is stored at room temperature. The compound is a 5-bromocytosine derivative that has been shown to be a potent anti-HIV agent. It can be used in the synthesis of cross-link products under anaerobic and aerobic conditions.
Biological Activity I Assay Protocols (From Reference)
Targets
4-Amino-5-bromopyrimidin-2(1H)-one is a synthetic intermediate and pyrimidine analog rather than a direct pharmacological agent. As a building block, it does not have specific biological receptors as its primary targets. The brominated cytosine scaffold is a privileged structure in medicinal chemistry, and the compound has been shown to be a potent anti-HIV agent as a 5-bromocytosine derivative. The amino and bromo substituents provide handles for diverse chemical transformations, including cross-coupling reactions and nucleophilic substitution. Its primary applications are as a synthetic intermediate for antiviral drug discovery.
ln Vitro
In vitro, 4-amino-5-bromopyrimidin-2(1H)-one is used as a biochemical reagent and organic compound for biomedical research. The compound is a 5-bromocytosine derivative that has been shown to be a potent anti-HIV agent. Cellular assays are typically performed on the final compounds synthesized from this building block. The compound's brominated pyrimidine scaffold allows for various chemical transformations, making it valuable for drug discovery, particularly for antiviral agents.
ln Vivo
In vivo data for 4-amino-5-bromopyrimidin-2(1H)-one is limited, as it is primarily a research reagent and synthetic intermediate. The compound is classified for research use only and is not intended for human or veterinary therapeutic applications. However, anti-HIV agents synthesized using this building block have been investigated for their therapeutic potential. The compound's primary value lies in its use as a synthetic intermediate. Specific in vivo data for the parent compound is not available in the public literature.
Enzyme Assay
In vitro enzyme/receptor binding assays for 4-amino-5-bromopyrimidin-2(1H)-one are not typically performed, as it is primarily a synthetic intermediate. The compound is used as a building block in the synthesis of antiviral agents. A typical assay involves using the compound in chemical reactions, such as cross-coupling or nucleophilic substitution, to prepare final compounds. The compound is dissolved in organic solvents such as DMSO or ethanol. The resulting products can be evaluated for biological activity. Antiviral assays against HIV or other viruses can be performed on the final synthesized compounds. IC₅₀ values are calculated from dose-response curves.
Cell Assay
Cellular assays for 4-amino-5-bromopyrimidin-2(1H)-one derivatives typically evaluate antiviral activity. A standard protocol involves culturing virus-susceptible cell lines in growth medium at 37°C with 5% CO₂. Cells are infected with virus and treated with synthesized compounds at varying concentrations. Viral replication is assessed by measuring viral antigens or cytopathic effect. Cytotoxicity is evaluated using MTT or similar assays. EC₅₀ and CC₅₀ values are calculated from dose-response curves. The selectivity index is determined.
Animal Protocol
In vivo animal studies for 4-amino-5-bromopyrimidin-2(1H)-one are not standard, as it is a synthetic intermediate rather than a therapeutic candidate. The compound is classified for research use only and is not intended for human or veterinary applications. Any animal studies would typically be conducted on the final antiviral agents synthesized using this building block. These studies would evaluate efficacy in animal models, pharmacokinetics, and safety. The compound's primary value lies in its use as a synthetic intermediate.
ADME/Pharmacokinetics
Pharmacokinetic data for 4-amino-5-bromopyrimidin-2(1H)-one is limited, as it is primarily a research reagent. The compound has a molecular weight of 189.99 g/mol and a molecular formula of C₄H₄BrN₃O. It appears as a solid at room temperature. As a brominated pyrimidine, it may undergo metabolic dehalogenation and oxidation. Specific ADME data is not available. The compound is stored in a dry, cool place.
Toxicity/Toxicokinetics
4-Amino-5-bromopyrimidin-2(1H)-one is classified for research use only and is not intended for human or veterinary applications. Standard safety precautions include handling with appropriate personal protective equipment (gloves, lab coat, safety goggles) in a well-ventilated area. The compound should be stored in a dry, cool place away from incompatible materials. Acute toxicity data is not readily available in the public literature. As with all research chemicals, appropriate laboratory safety practices should be followed. No specific LD₅₀ values are available in the public domain.
Additional Infomation
4-Amino-5-bromopyrimidin-2(1H)-one (5-Bromocytosine, CAS 2240-25-7) is a biochemical reagent with the molecular formula C₄H₄BrN₃O and a molecular weight of 189.99 g/mol. It is a 5-bromocytosine derivative that has been shown to be a potent anti-HIV agent. The compound is classified as a research-use-only reagent and is available from multiple commercial suppliers.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C4H4BRN3O
Molecular Weight
190.00
Exact Mass
263.071
CAS #
2240-25-7
PubChem CID
75233
Appearance
White to off-white solid powder
Density
1.3±0.1 g/cm3
Boiling Point
359.5±42.0 °C at 760 mmHg
Melting Point
240-243ºC
Flash Point
171.2±27.9 °C
Vapour Pressure
0.0±0.8 mmHg at 25°C
Index of Refraction
1.583
LogP
3.14
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
2
Rotatable Bond Count
0
Heavy Atom Count
9
Complexity
208
Defined Atom Stereocenter Count
0
SMILES
BrC1C([H])=NC(N([H])C=1N([H])[H])=O
InChi Key
QFVKLKDEXOWFSL-UHFFFAOYSA-N
InChi Code
InChI=1S/C4H4BrN3O/c5-2-1-7-4(9)8-3(2)6/h1H,(H3,6,7,8,9)
Chemical Name
6-amino-5-bromo-1H-pyrimidin-2-one
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: This product requires protection from light (avoid light exposure) during transportation and storage.
Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 5.2632 mL 26.3158 mL 52.6316 mL
5 mM 1.0526 mL 5.2632 mL 10.5263 mL
10 mM 0.5263 mL 2.6316 mL 5.2632 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

  • Calculate the Mass of a compound required to prepare a solution of known volume and concentration
  • Calculate the Volume of solution required to dissolve a compound of known mass to a desired concentration
  • Calculate the Concentration of a solution resulting from a known mass of compound in a specific volume
An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
  • To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

  • Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
  • Click the “Calculate” button
  • The answer appears in the Volume (to add to vial) box
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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