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4-Bromo-2-hydroxypyridine (4-Bromo-2-pyridone)

4-Bromo-2-hydroxypyridine is a biochemical compound that may be utilized as a biomaterial or organic/chemical reagent for biomedical research.
4-Bromo-2-hydroxypyridine (4-Bromo-2-pyridone)
4-Bromo-2-hydroxypyridine (4-Bromo-2-pyridone) Chemical Structure CAS No.: 36953-37-4
Product category: Biochemical Assay Reagents
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
25g
50g
Other Sizes
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Product Description
4-Bromo-2-hydroxypyridine is a biochemical compound that may be utilized as a biomaterial or organic/chemical reagent for biomedical research.
4-Bromo-2-hydroxypyridine (CAS 36953-37-4) is a halogenated pyridine derivative with the molecular formula C₅H₄BrNO and a molecular weight of 174.00 g/mol. It is a biochemical reagent that can be used as a biological material for life science research. It is also known as 4-bromo-2-pyridone.
Biological Activity I Assay Protocols (From Reference)
Targets
4-Bromo-2-hydroxypyridine is an intermediate used to synthesize M1 muscarinic acetylcholine receptor (M1 mAChR) positive allosteric modulators. It is also used as a reagent to synthesize trans-3,4'-bispyridinylethylenes, compounds that act as inhibitors of protein kinase B for cancer treatment. It has been shown to have genotoxic activity and can inhibit DNA synthesis.
ln Vitro
In vitro, 4-bromo-2-hydroxypyridine is used as a chemical intermediate. It is used to synthesize M1 mAChR positive allosteric modulators for research on Alzheimer's disease and schizophrenia. It is also used to synthesize protein kinase B inhibitors for cancer research. Its genotoxic activity has been demonstrated in vitro.
ln Vivo
In vivo activity data for 4-bromo-2-hydroxypyridine itself are not available, as the compound is an intermediate used for synthesis. Rather, it is a precursor used in the synthesis of M1 mAChR modulators and kinase inhibitors that are subsequently evaluated in animal models.
Enzyme Assay
For in vitro chemical synthesis, 4-bromo-2-hydroxypyridine is used as a building block. The bromine atom can be used for cross-coupling reactions, and the hydroxyl group can be used for further derivatization. Standard protocols involve reacting the compound with appropriate reagents to introduce various substituents for the synthesis of target molecules.
Cell Assay
For in vitro cell-based experiments, 4-bromo-2-hydroxypyridine is used as an intermediate in the synthesis of compounds that are tested in cell viability, proliferation, and receptor binding assays. The compound itself is not typically evaluated in cell-based assays. Standard cell culture protocols for test compounds synthesized from this intermediate involve dissolving the final product in DMSO.
Animal Protocol
In vivo animal studies using 4-bromo-2-hydroxypyridine are conducted on the final drug compounds synthesized from it, not on the intermediate itself. For M1 mAChR modulators or kinase inhibitors derived from this building block, efficacy studies would typically be performed in mouse models of Alzheimer's disease, schizophrenia, or cancer.
ADME/Pharmacokinetics
Pharmacokinetic properties of 4-bromo-2-hydroxypyridine as a standalone compound are not characterized in the literature. The compound is a solid and should be stored under appropriate conditions.
Toxicity/Toxicokinetics
4-Bromo-2-hydroxypyridine is a research chemical and should be handled with appropriate laboratory safety precautions. As a brominated compound, it may cause skin and eye irritation. The compound is for research use only and not for human therapeutic or diagnostic applications.
Additional Infomation
4-Bromo-2-hydroxypyridine (CAS 36953-37-4) is primarily a research-grade chemical intermediate, not an FDA-approved pharmaceutical drug. Its primary applications are as an intermediate for synthesizing M1 mAChR positive allosteric modulators for Alzheimer's and schizophrenia research, and as a reagent for synthesizing protein kinase B inhibitors for cancer research.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C5H4BRNO
Molecular Weight
174.00
Exact Mass
172.947
CAS #
36953-37-4
PubChem CID
817115
Appearance
White to light brown solid powder
Density
1.8±0.1 g/cm3
Boiling Point
346.4±22.0 °C at 760 mmHg
Melting Point
186ºC
Flash Point
163.3±22.3 °C
Vapour Pressure
0.0±0.8 mmHg at 25°C
Index of Refraction
1.614
LogP
0.55
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
1
Rotatable Bond Count
0
Heavy Atom Count
8
Complexity
171
Defined Atom Stereocenter Count
0
SMILES
O=C1C=C(Br)C=CN1
InChi Key
SSLMGOKTIUIZLY-UHFFFAOYSA-N
InChi Code
InChI=1S/C5H4BrNO/c6-4-1-2-7-5(8)3-4/h1-3H,(H,7,8)
Chemical Name
4-bromo-1H-pyridin-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

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)
DMSO: 100 mg/mL (574.71 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (14.37 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.5 mg/mL (14.37 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
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.

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Solubility in Formulation 3: ≥ 2.5 mg/mL (14.37 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.


 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 5.7471 mL 28.7356 mL 57.4713 mL
5 mM 1.1494 mL 5.7471 mL 11.4943 mL
10 mM 0.5747 mL 2.8736 mL 5.7471 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
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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:
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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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