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Escitalopram-d6 oxalate (escitalopram d6 oxalate)

Cat No.:V70012 Purity: ≥98%
Escitalopram-d6 (oxalate) is the deuterated form of Escitalopram oxalate.
Escitalopram-d6 oxalate (escitalopram d6 oxalate)
Escitalopram-d6 oxalate (escitalopram d6 oxalate) Chemical Structure CAS No.: 1217733-09-9
Product category: Serotonin Transporter
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
Other Sizes

Other Forms of Escitalopram-d6 oxalate (escitalopram d6 oxalate):

  • Escitalopram Oxalate (Citalopram oxalate)
Official Supplier of:
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Product Description
Escitalopram-d6 (oxalate) is the deuterated form of Escitalopram oxalate. Escitalopram ((S)-Citalopram) oxalate is the S-enantiomer of racemic Citalopram and is a selective serotonin reuptake inhibitor (SSRI) with a Ki of 0.89 nM and a lower binding rate than R(-)-enantiomer Affinity is 30 times higher. Escitalopram oxalate is selective for both the dopamine transporter (DAT) and the norepinephrine transporter (NET). Escitalopram oxalate is an antidepressant studied for depression.
Escitalopram-d6 oxalate is the deuterated form of Escitalopram oxalate, the S-enantiomer of citalopram and a selective serotonin reuptake inhibitor (SSRI). With a molecular weight of 420.46 and formula C22H17D6FN2O5, this isotopically labeled compound is intended for use as an analytical reference material and internal standard for the quantification of escitalopram. Escitalopram has a Ki of 0.89 nM for SERT. Escitalopram-d6 oxalate is for research purposes only and is not for human therapeutic use.
Biological Activity I Assay Protocols (From Reference)
Targets
Escitalopram-d6 oxalate targets the serotonin transporter (SERT) as a selective serotonin reuptake inhibitor (SSRI). As a deuterated form of escitalopram, it retains the same pharmacological activity as the parent compound, which is a potent and selective inhibitor of serotonin reuptake with a Ki of 0.89 nM. The deuterium labeling does not significantly alter the binding affinity or pharmacological profile of the compound, making it suitable as an analytical standard. The compound's mechanism involves inhibition of SERT, increasing synaptic serotonin levels.
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 studies of Escitalopram-d6 oxalate are primarily focused on its use as an analytical standard rather than its pharmacological activity. As a deuterated analog of escitalopram, it retains the same reuptake inhibition properties as the parent compound. Escitalopram is a potent SSRI with a Ki of 0.89 nM for SERT. In vitro characterization includes receptor binding assays to confirm its affinity for SERT. The compound is used in analytical method development and validation for the quantification of escitalopram in biological samples.
ln Vivo
In vivo studies of Escitalopram-d6 oxalate are limited, as the compound is primarily used as an analytical internal standard rather than for pharmacological studies. As a deuterated form of escitalopram, it would be expected to exhibit the same in vivo activity as the parent compound, which is an SSRI used for major depressive disorder. Escitalopram is administered orally and has a well-characterized pharmacokinetic profile. However, Escitalopram-d6 oxalate itself is not typically used for in vivo pharmacological studies due to its role as an analytical standard.
Enzyme Assay
For analytical method development, Escitalopram-d6 oxalate is used as an internal standard for the quantification of escitalopram by GC-MS or LC-MS. The compound is dissolved in appropriate solvents and spiked into biological samples (e.g., plasma, urine) at known concentrations. Samples are processed using standard extraction procedures (e.g., solid-phase extraction or liquid-liquid extraction). The extracted samples are analyzed by GC-MS or LC-MS with selected ion monitoring (SIM) or multiple reaction monitoring (MRM) for the deuterated and non-deuterated compounds. Calibration curves are generated by plotting the peak area ratio of escitalopram to Escitalopram-d6 oxalate against the concentration of escitalopram.
Cell Assay
For in vitro cellular assays, Escitalopram-d6 oxalate is not typically used due to its role as an analytical standard. However, for reuptake inhibition studies, cell lines expressing SERT (e.g., CHO or HEK293 cells) can be cultured in appropriate media under standard conditions (37°C, 5% CO2). Escitalopram-d6 oxalate is dissolved in DMSO and diluted in assay buffer to desired concentrations. Serotonin uptake is measured using radiolabeled substrates. Each concentration is tested in replicate wells with vehicle controls and positive controls (e.g., escitalopram).
Animal Protocol
For in vivo animal studies of Escitalopram-d6 oxalate, no specific protocols are available as the compound is primarily used as an analytical internal standard. For general in vivo administration of escitalopram, the compound is formulated in suitable vehicles and administered via oral gavage. Dosing regimens vary by study objective. For depression models, animals are treated with compound and behavioral responses are recorded. For pharmacokinetic studies, blood and brain tissue samples are collected at predetermined time points. All procedures must follow institutional animal care and use committee guidelines.
ADME/Pharmacokinetics
Pharmacokinetic properties of Escitalopram-d6 oxalate are similar to those of escitalopram. The compound has a molecular weight of 420.46 and formula C22H17D6FN2O5. CAS number: 1217733-09-9. Appearance: white to off-white solid. Storage: 2-8°C refrigerator, under inert atmosphere. As a deuterated compound, it is chemically stable and suitable for analytical applications. Specific pharmacokinetic parameters such as half-life, clearance, and bioavailability are reported for escitalopram in the primary literature.
Toxicity/Toxicokinetics
According to available safety information, Escitalopram-d6 oxalate is intended for research purposes only and is not for human use. Standard laboratory safety precautions should be followed when handling this compound, including the use of appropriate personal protective equipment (gloves, lab coat, safety goggles). The compound should be handled in a well-ventilated area. Avoid dust formation and inhalation. In case of skin contact, wash with plenty of soap and water. In case of eye contact, rinse cautiously with water for several minutes. No clinical toxicity data are available.
References

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

[2]. Structure-activity relationships for a novel series of citalopram (1-(3-(dimethylamino)propyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbon itrile) analogues at monoamine transporters. J Med Chem, 2010. 53(16): p. 6112-21.

[3]. Pastoor, D. and J. Gobburu, Clinical pharmacology review of escitalopram for the treatment of depression. Expert Opin Drug Metab Toxicol, 2014. 10(1): p. 121-8.

[4]. Escitalopram alleviates stress-induced Alzheimer's disease-like tau pathologies and cognitive deficits by reducing hypothalamic-pituitary-adrenal axis reactivity and insulin/GSK-3β signal pathway activity. Neurobiol Aging. 2018;67:137-147.

[5]. Effect of escitalopram on Aβ levels and plaque load in an Alzheimer mouse model. Neurology. 2020;95(19):e2666-e2674.

Additional Infomation
Escitalopram-d6 oxalate is the deuterated form of Escitalopram oxalate, the S-enantiomer of citalopram and a selective serotonin reuptake inhibitor (SSRI) with a Ki of 0.89 nM. It is intended for use as an analytical reference material and internal standard for the quantification of escitalopram. It has a molecular weight of 420.46 and formula C22H17D6FN2O5. It is for research use only with no regulatory approvals reported as a therapeutic agent.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C22H17D6FN2O5
Molecular Weight
420.46
Exact Mass
420.196
CAS #
1217733-09-9
Related CAS #
Escitalopram oxalate;219861-08-2
PubChem CID
46781029
Appearance
Typically exists as solid at room temperature
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
8
Rotatable Bond Count
6
Heavy Atom Count
30
Complexity
537
Defined Atom Stereocenter Count
1
SMILES
[2H]C([2H])([2H])N(CCC[C@@]1(C2=C(CO1)C=C(C=C2)C#N)C3=CC=C(C=C3)F)C([2H])([2H])[2H].C(=O)(C(=O)O)O
InChi Key
KTGRHKOEFSJQNS-RURDCJKXSA-N
InChi Code
InChI=1S/C20H21FN2O.C2H2O4/c1-23(2)11-3-10-20(17-5-7-18(21)8-6-17)19-9-4-15(13-22)12-16(19)14-24-20;3-1(4)2(5)6/h4-9,12H,3,10-11,14H2,1-2H3;(H,3,4)(H,5,6)/t20-;/m0./s1/i1D3,2D3;
Chemical Name
(1S)-1-[3-[bis(trideuteriomethyl)amino]propyl]-1-(4-fluorophenyl)-3H-2-benzofuran-5-carbonitrile;oxalic acid
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 2.3783 mL 11.8917 mL 23.7835 mL
5 mM 0.4757 mL 2.3783 mL 4.7567 mL
10 mM 0.2378 mL 1.1892 mL 2.3783 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:

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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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