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Doxofylline-d6 (doxofylline d6)

Cat No.:V72032 Purity: ≥98%
Doxofylline-d6 is the deuterium labelled form of Doxofylline.
Doxofylline-d6 (doxofylline d6)
Doxofylline-d6 (doxofylline d6) Chemical Structure CAS No.: 1219805-99-8
Product category: Phosphodiesterase(PDE)
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
5mg
Other Sizes

Other Forms of Doxofylline-d6 (doxofylline d6):

  • Doxofylline-d4 (doxofylline d4)
  • Doxofylline
Official Supplier of:
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Top Publications Citing lnvivochem Products
Product Description
Doxofylline-d6 is the deuterium labelled form of Doxofylline. Doxofylline is an antagonist of adenosine A1 receptor and can inhibit phosphodiesterase IV.
Doxofylline-d6 is the deuterium-labeled form of Doxofylline. Doxofylline is an antagonist of the adenosine A1 receptor and also inhibits phosphodiesterase IV (PDE4). Deuterium labeling is used to incorporate stable heavy isotopes of hydrogen into drug molecules for research purposes, particularly in pharmacokinetic studies. Doxofylline-d6 has a molecular weight of 272.29 and is a stable isotope-labeled compound. It is used as an internal standard in analytical methods and for studying the metabolism and pharmacokinetics of Doxofylline.
Biological Activity I Assay Protocols (From Reference)
Targets
Doxofylline-d6 targets the same receptors and enzymes as Doxofylline: the adenosine A1 receptor and phosphodiesterase IV (PDE4). As an adenosine A1 receptor antagonist, Doxofylline blocks the effects of adenosine at this receptor. As a PDE4 inhibitor, Doxofylline increases intracellular cAMP levels by preventing its hydrolysis. Doxofylline-d6 is not typically used for pharmacological studies of the target itself, but rather as a labeled analog for studying the pharmacokinetics and metabolism of Doxofylline.
ln Vitro
Drug compounds have included stable heavy isotopes of carbon, hydrogen, and other elements, mostly as quantitative tracers while the drugs were being developed. Because deuteration may have an effect on a drug's pharmacokinetics and metabolic properties, it is a cause for concern [1].
In vitro activity data for Doxofylline-d6 are not typically generated, as the compound is primarily used as an analytical standard and for pharmacokinetic studies. The biological activity of Doxofylline-d6 is expected to be similar to that of Doxofylline, which is an adenosine A1 receptor antagonist and PDE4 inhibitor. However, Doxofylline-d6 is not typically used for activity assays; its primary use is as a labeled compound for research applications.
ln Vivo
In vivo studies using Doxofylline-d6 are primarily pharmacokinetic in nature. The compound is used as an internal standard or tracer to study the absorption, distribution, metabolism, and excretion of Doxofylline. Deuterium-labeled compounds are used to track the parent drug and its metabolites in biological samples. Doxofylline-d6 is not typically used for efficacy studies, as its primary purpose is analytical.
Enzyme Assay
The use of Doxofylline-d6 in in vitro experiments is primarily analytical. It is used as an internal standard in liquid chromatography-mass spectrometry (LC-MS) methods for the quantification of Doxofylline in biological samples. The compound is added to samples at a known concentration, and the ratio of Doxofylline to Doxofylline-d6 is used to calculate the concentration of Doxofylline. This approach corrects for variations in sample preparation and instrument performance.
Cell Assay
In vitro cellular assays are not typically performed with Doxofylline-d6, as the compound is primarily used as an analytical standard. If cellular studies were performed, they would be similar to those for Doxofylline, assessing adenosine A1 receptor antagonism or PDE4 inhibition. However, the primary use of Doxofylline-d6 is in analytical chemistry and pharmacokinetic studies, not in cellular activity assays.
Animal Protocol
Doxofylline-d6 is used in pharmacokinetic studies in animals and humans. The compound is administered along with or as a substitute for Doxofylline, and blood or tissue samples are collected at various time points. The concentration of Doxofylline-d6 (and Doxofylline) is measured by LC-MS. Pharmacokinetic parameters such as Cmax, Tmax, half-life, and AUC are calculated. The deuterium label allows for the simultaneous measurement of the drug and its metabolites.
ADME/Pharmacokinetics
The pharmacokinetic properties of Doxofylline-d6 are similar to those of Doxofylline, as the deuterium label does not significantly alter the compound's physicochemical properties. The compound is used as an internal standard in pharmacokinetic studies to accurately measure Doxofylline concentrations. It has a molecular weight of 272.29. Stable isotope labeling allows for the tracking of the compound in biological systems.
Toxicity/Toxicokinetics
Doxofylline-d6 is a stable isotope-labeled compound with an isotopic enrichment of 99% 2H. It is stable if stored under recommended conditions. After three years, the compound should be re-analyzed for chemical purity before use. As a labeled compound, it is not typically used for toxicology studies; its primary use is analytical. Doxofylline-d6 is for research use only and not for human use.
References

[1]. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019;53(2):211-216.

[2]. Doxofylline: a promising methylxanthine derivative for the treatment of asthma and chronic obstructive pulmonary disease. Expert Opin Pharmacother. 2009 Oct;10(14):2343-56.

Additional Infomation
Doxofylline-d6 is the deuterium-labeled form of Doxofylline, an adenosine A1 receptor antagonist and PDE4 inhibitor. It is used as an internal standard in analytical methods and for pharmacokinetic studies of Doxofylline. The compound has a molecular weight of 272.29 and an isotopic enrichment of 99% 2H. It is a research-grade compound for non-clinical use. No clinical trials or regulatory approvals have been reported for Doxofylline-d6.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C11H14N4O4
Molecular Weight
266.253262042999
Exact Mass
272.139
CAS #
1219805-99-8
Related CAS #
Doxofylline;69975-86-6
PubChem CID
162641888
Appearance
White to off-white solid powder
LogP
-0.9
Hydrogen Bond Donor Count
0
Hydrogen Bond Acceptor Count
5
Rotatable Bond Count
2
Heavy Atom Count
19
Complexity
398
Defined Atom Stereocenter Count
0
SMILES
C(C1OCCO1)N1C=NC2N(C(=O)N(C([H])([H])[H])C(=O)C1=2)C([H])([H])[H]
InChi Key
HWXIGFIVGWUZAO-WFGJKAKNSA-N
InChi Code
InChI=1S/C11H14N4O4/c1-13-9-8(10(16)14(2)11(13)17)15(6-12-9)5-7-18-3-4-19-7/h6-7H,3-5H2,1-2H3/i1D3,2D3
Chemical Name
7-(1,3-dioxolan-2-ylmethyl)-1,3-bis(trideuteriomethyl)purine-2,6-dione
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)
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 3.7559 mL 18.7793 mL 37.5587 mL
5 mM 0.7512 mL 3.7559 mL 7.5117 mL
10 mM 0.3756 mL 1.8779 mL 3.7559 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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