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24R-Calcipotriol

Alias: PRI-2202 PRI2202 PRI 2202 Impurity D of Calcipotriol
Cat No.:V33811 Purity: ≥98%
24R-Calcipotriol (PRI 2202; Impurity D of Calcipotriol) is an impurity of Calcipotriol; Calcipotriol is a synthetic calcitriol/Vitamin D3 (VD3) analog and an agonist of the VD3 receptor.
24R-Calcipotriol
24R-Calcipotriol Chemical Structure CAS No.: 112827-99-3
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
Official Supplier of:
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Product Description
24R-Calcipotriol (PRI 2202; Impurity D of Calcipotriol) is an impurity of Calcipotriol; Calcipotriol is a synthetic calcitriol/Vitamin D3 (VD3) analog and an agonist of the VD3 receptor. It is used in the treatment of psoriasis and marketed under the trade name Dovonex. It has comparable affinity with calcitriol (Vit. D) for the Vitamin D receptor (VDR), while being less than 1% as active as the calcitriol in regulating calcium metabolism. Chronic plaque psoriasis is the chief medical use of calcipotriol. It has also been used successfully in the treatment of alopecia areata.


24R-Calcipotriol (CAS 112827-99-3), also known as PRI 2202 or Tacalcitol, is a synthetic vitamin D3 analog and an impurity of Calcipotriol. It has been studied for its potential antitumor effects and its ability to modulate cell growth and differentiation. It also exhibits anti-inflammatory and immunomodulatory properties.
Biological Activity I Assay Protocols (From Reference)
Targets
24R-Calcipotriol targets the vitamin D receptor (VDR), a nuclear receptor involved in the regulation of cell proliferation, differentiation, and immune function. As a VDR ligand, it modulates gene transcription and exhibits antiproliferative activity against various cancer cell lines.
ln Vitro
In vitro, 24R-Calcipotriol exhibits antiproliferative activity against human cancer cell lines including HL-60, HL60/MX2, MCF-7, T47D, SCC-25, and mouse WEHI-3 cells. It induces differentiation and modulates cell growth in various in vitro models. Studies have shown that combined treatment with Vitamin D analogues is more effective than cytostatics alone.
ln Vivo
In vivo, 24R-Calcipotriol has been investigated for its antitumor effects in mouse models. Studies have demonstrated that combination treatment with Vitamin D analogues and cytostatics enhances antitumor efficacy compared to cytostatics alone. The compound also modulates immune responses and exhibits anti-inflammatory effects.
Enzyme Assay
In vitro receptor binding assays for 24R-Calcipotriol are performed using VDR-containing nuclear extracts or recombinant VDR protein. Radiolabeled calcitriol or other VDR ligands are used as tracers, and binding affinity is determined by measuring displacement via scintillation counting. IC50 values are calculated from dose-response curves.
Cell Assay
Cellular assays for 24R-Calcipotriol are conducted using cancer cell lines such as HL-60, MCF-7, or SCC-25. Cells are treated with serial dilutions of the compound (0.1 nM to 10 uM) for 24-72 hours. Cell proliferation is assessed by MTT or CCK-8 assays. Differentiation markers are evaluated by flow cytometry or qPCR. Apoptosis is measured by Annexin V/PI staining.
Animal Protocol
In vivo studies for 24R-Calcipotriol are conducted in mouse xenograft models bearing human tumor cells. The compound is administered via intraperitoneal or oral routes at doses typically ranging from 0.1-10 ug/kg. Tumor volume is measured, and tumor growth inhibition (TGI) is calculated. Combination studies with cytostatics are performed to evaluate synergistic effects.
ADME/Pharmacokinetics
Pharmacokinetic properties of 24R-Calcipotriol are similar to those of other Vitamin D analogues. The compound has a molecular weight of 412.6 and formula C27H40O3. It is unstable in solution and should be stored at -20degC, protected from light, and under nitrogen. Oral bioavailability and half-life data are not extensively characterized.
Toxicity/Toxicokinetics
Toxicological data for 24R-Calcipotriol are limited. As a Vitamin D analogue, standard safety concerns include potential effects on calcium homeostasis and hypercalcemia at high doses. No significant toxicity has been reported at therapeutic doses. The compound is for research use only.
References

[1]. Gocek,\nElzbieta; Kielbinski, Marek; Baurska, Hanna et al. Different\nsusceptibilities to 1,25-dihydroxyvitamin D3-induced differentiation of\nAML cells carrying various mutations. Leukemia Research (2010), 34(5),\n649-657.

[2]. Gocek,\nElzbieta; Kielbinski, Marek; Wylob, Paulina et al. Side-chain modified\nvitamin D analogs induce rapid accumulation of VDR in the cell nuclei\nproportionately to their differentiation-inducing potential. Steroids\n(2008), 73(14), 1359-1366.

[3]. Wietrzyk,\nJoanna; Nevozhay, Dmitry; Filip, Beata et al. The antitumor effect of\nlowered doses of cytostatics combined with new analogs of vitamin D in\nmice. Anticancer Research (2007), 27(5A), 3387-3398.

Additional Infomation
24R-Calcipotriol (PRI 2202, Tacalcitol) is a synthetic Vitamin D3 analogue and an impurity of Calcipotriol. It has been investigated for its potential antitumor effects and combination therapy with cytostatics. Tacalcitol is approved in some regions for the treatment of psoriasis. The compound is for research use only and not for human therapeutic application in this context.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C₂₇H₄₀O₃
Molecular Weight
412.60
Exact Mass
412.298
CAS #
112827-99-3
PubChem CID
9547353
Appearance
White solid powder
LogP
5.09
Hydrogen Bond Donor Count
3
Hydrogen Bond Acceptor Count
3
Rotatable Bond Count
5
Heavy Atom Count
30
Complexity
743
Defined Atom Stereocenter Count
7
SMILES
C[C@H](/C=C/[C@@H](C1CC1)O)[C@H]2CC[C@@H]\3[C@@]2(CCC/C3=C\C=C/4\C[C@H](C[C@@H](C4=C)O)O)C
InChi Key
LWQQLNNNIPYSNX-CIJZWTHJSA-N
InChi Code
InChI=1S/C27H40O3/c1-17(6-13-25(29)20-8-9-20)23-11-12-24-19(5-4-14-27(23,24)3)7-10-21-15-22(28)16-26(30)18(21)2/h6-7,10,13,17,20,22-26,28-30H,2,4-5,8-9,11-12,14-16H2,1,3H3/b13-6+,19-7+,21-10-/t17-,22-,23-,24+,25+,26+,27-/m1/s1
Chemical Name
(1R,3S,5Z)-5-[(2E)-2-[(1R,3aS,7aR)-1-[(E,2R,5R)-5-cyclopropyl-5-hydroxypent-3-en-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexane-1,3-diol
Synonyms
PRI-2202 PRI2202 PRI 2202 Impurity D of Calcipotriol
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: (1). This product requires protection from light (avoid light exposure) during transportation and storage.  (2). Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture.  (3). This product is not stable in solution, please use freshly prepared working solution for optimal results.
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 2.4237 mL 12.1183 mL 24.2365 mL
5 mM 0.4847 mL 2.4237 mL 4.8473 mL
10 mM 0.2424 mL 1.2118 mL 2.4237 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

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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?
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  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
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  • 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)
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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

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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:
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  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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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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