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Ondansetron-13C,d3

Cat No.:V48380 Purity: ≥98%
Ondansetron-13C,d3 is a 13C- and deuterated labeled ondansetron.
Ondansetron-13C,d3
Ondansetron-13C,d3 Chemical Structure CAS No.: 2699607-85-5
Product category: New3
This product is for research use only, not for human use. We do not sell to patients.
Size Price
1mg
Other Sizes

Other Forms of Ondansetron-13C,d3:

  • Ondansetron-d5 (GR 38032-d5; SN 307-d5)
  • Ondansetron-d3 hydrochloride (ondansetron-d3 hydrochloride)
  • Ondansetron hydrochloride dihydrate (ondansetron hydrochloride dihydrate; GR 38032 hydrochloride dihydrate; SN 307 hydrochloride dihydrate)
  • Ondansetron-d6 hydrochloride (GR 38032-d6 hydrochloride; SN 307-d6 hydrochloride)
  • Ondansetron-d3 (GR 38032-d3; SN 307-d3)
  • Ondansetron (GR 38032; SN 307; GR-C507/75)
Official Supplier of:
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Top Publications Citing lnvivochem Products
Product Description
Ondansetron-13C,d3 is a 13C- and deuterated labeled ondansetron. Ondansetron (GR 38032; SN 307) is a 5-HT3 receptor blocker (antagonist).
Product Application
Overview
Ondansetron-13C,d3 is a carbon-13 and deuterium labeled form of ondansetron, a well-known 5-HT3 receptor antagonist. This isotopically labeled compound is specifically developed for use in quantitative research applications where accurate detection, tracking, and measurement are essential. The incorporation of both ¹³C and deuterium atoms allows researchers to clearly distinguish the labeled compound from endogenous or unlabeled ondansetron in complex biological matrices.
Unlike therapeutic formulations, Ondansetron-13C,d3 is intended solely for research use, supporting analytical workflows such as mass spectrometry–based assays, metabolic profiling, and pharmacokinetic investigations. Its structural similarity to native ondansetron ensures comparable chemical behavior while providing a distinct isotopic signature for high-confidence data analysis.

Scientific Background and Utility
Ondansetron itself is a selective antagonist of the serotonin 5-HT3 receptor, a ligand-gated ion channel involved in neurotransmission and gastrointestinal signaling. Because of its well-characterized receptor interactions and metabolic pathways, ondansetron is frequently used as a reference compound in drug metabolism and transport studies. The isotopically labeled version enhances these studies by enabling internal standardization and reducing analytical variability.
Ondansetron-13C,d3 is particularly valuable in LC-MS/MS workflows, where isotope dilution techniques are used to improve quantification accuracy. The labeled compound closely mirrors the retention time, ionization efficiency, and fragmentation pattern of the parent drug, making it an ideal internal standard for sensitive and reproducible measurements.

Research Applications
This compound is widely used in pharmacokinetic and bioanalytical method development, metabolite identification, and drug–drug interaction studies. It also supports transporter research, absorption and clearance modeling, and validation of analytical assays in regulated laboratory environments. Its stable isotope labeling makes it suitable for long-term studies requiring consistent performance across multiple experimental runs.
Ondansetron-13C,d3 is supplied at a purity of ≥98% and is produced under strict quality control standards. Each shipment includes a Certificate of Analysis, Safety Data Sheet, and detailed handling instructions to ensure seamless integration into laboratory protocols.

Support Your Analytical Studies
InvivoChem provides Ondansetron-13C,d3 as a reliable reference material for high-precision research. Contact our team to obtain this isotope-labeled compound and strengthen the accuracy and reproducibility of your analytical workflows.
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Biological Activity I Assay Protocols (From Reference)
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Exact Mass
297.175
CAS #
2699607-85-5
Related CAS #
Ondansetron;99614-02-5
PubChem CID
76973539
Appearance
Typically exists as solid at room temperature
Hydrogen Bond Donor Count
0
Hydrogen Bond Acceptor Count
2
Rotatable Bond Count
2
Heavy Atom Count
22
Complexity
440
Defined Atom Stereocenter Count
0
SMILES
[2H][13C]([2H])([2H])N1C2=C(C3=CC=CC=C31)C(=O)C(CC2)CN4C=CN=C4C
InChi Key
FELGMEQIXOGIFQ-JVXUGDAPSA-N
InChi Code
InChI=1S/C18H19N3O/c1-12-19-9-10-21(12)11-13-7-8-16-17(18(13)22)14-5-3-4-6-15(14)20(16)2/h3-6,9-10,13H,7-8,11H2,1-2H3/i2+1D3
Chemical Name
3-[(2-methylimidazol-1-yl)methyl]-9-(trideuterio(113C)methyl)-2,3-dihydro-1H-carbazol-4-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)
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.)
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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