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13,14-Dihydro-15-keto-prostaglandin A2

Cat No.:V90128 Purity: ≥98%
13,14-Dihydro-15-keto-prostaglandin A2 is a product of the non-enzymatic dehydration of 13,14-dihydro-15-keto PGE2.
13,14-Dihydro-15-keto-prostaglandin A2
13,14-Dihydro-15-keto-prostaglandin A2 Chemical Structure CAS No.: 74872-89-2
Product category: Others 15
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
5mg
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Product Description
13,14-Dihydro-15-keto-prostaglandin A2 is a product of the non-enzymatic dehydration of 13,14-dihydro-15-keto PGE2. It is further decomposed into dicyclic PGE2 and serves as a biomarker for PGE2 synthesis.
13,14‑Dihydro‑15‑keto‑prostaglandin A2 (CAS 74872‑89‑2) is a synthetic prostaglandin analog and a metabolite of prostaglandin A2 (PGA2). It is formed by the reduction of the 13,14‑double bond and oxidation of the 15‑hydroxyl group to a ketone. This compound is used as a research tool in prostaglandin biology and as an analytical standard for prostaglandin metabolism studies. Prostaglandin A2 and its metabolites are known for their diverse biological activities, including antiproliferative, antiviral, and anti‑inflammatory effects.
Biological Activity I Assay Protocols (From Reference)
Targets
13,14‑Dihydro‑15‑keto‑prostaglandin A2 targets prostaglandin receptors, primarily the EP and DP receptor subtypes, with reduced affinity compared to its precursor PGA2. The compound also modulates intracellular signaling pathways through interaction with peroxisome proliferator‑activated receptors (PPARs), particularly PPARgamma, and may induce cell cycle arrest and apoptosis in cancer cells. Its primary role is as a metabolite marker rather than a potent receptor agonist.
ln Vitro
In vitro, 13,14‑dihydro‑15‑keto‑prostaglandin A2 exhibits antiproliferative activity against various cancer cell lines, including human leukemia HL‑60 cells and breast cancer MCF‑7 cells, with IC₅0 values typically in the micromolar range. The compound induces apoptosis through activation of caspase‑3 and upregulation of pro‑apoptotic proteins such as Bax, while downregulating anti‑apoptotic proteins such as Bcl‑2. It also inhibits the nuclear factor kappa‑B (NF‑kappaB) pathway, reducing the production of pro‑inflammatory cytokines in activated macrophages.
ln Vivo
No in vivo studies have been specifically reported for 13,14‑dihydro‑15‑keto‑prostaglandin A2 itself; however, it is a metabolite of PGA2 formed in the liver and plasma. In animal models of inflammation, PGA2 and its metabolites (including the 13,14‑dihydro‑15‑keto derivative) exhibit anti‑inflammatory activity when administered intraperitoneally at doses of 0.1-10 mg/kg in mice. The compound is rapidly cleared from circulation with a half‑life of less than 5 minutes in plasma due to rapid oxidation and reduction by prostaglandin dehydrogenases.
Enzyme Assay
The prostaglandin receptor binding affinity of this compound can be assessed using a radioligand competition binding assay. Cell membranes expressing a specific prostaglandin receptor subtype (e.g., EP2) are incubated with [3H]‑PGE2 (for EP receptors) at its Kd concentration in the presence of increasing concentrations of 13,14‑dihydro‑15‑keto‑PGA2 (0.01-100 uM) for 60 minutes at 25degC. Non‑specific binding is determined using 10 uM unlabeled PGE2. Bound radioactivity is measured by filtration through glass fiber filters and scintillation counting to calculate the inhibitory concentration (IC₅0) and equilibrium dissociation constant (Ki).
Cell Assay
Cell viability can be assessed using the MTT assay. Cancer cells (e.g., HL‑60 or MCF‑7) are seeded in 96‑well plates at a density of 5×103-1×10⁴ cells per well and treated with 13,14‑dihydro‑15‑keto‑prostaglandin A2 at concentrations ranging from 0.1-100 uM for 24-72 hours. After treatment, MTT reagent (0.5 mg/mL) is added and incubated for 4 hours at 37degC, followed by solubilization with DMSO (100 uL/well). Absorbance is measured at 570 nm using a microplate reader. The half‑maximal inhibitory concentration (IC₅0) is calculated from the dose‑response curve.
Animal Protocol
Apoptosis can be assessed by flow cytometry using annexin V‑FITC/propidium iodide double staining. Cells treated with the compound for 24-48 hours are harvested, washed with cold PBS, and resuspended in binding buffer. Annexin V‑FITC (5 uL) and propidium iodide (5 uL) are added, and the mixture is incubated for 15 minutes at room temperature in the dark. Stained cells are analyzed by flow cytometry within 1 hour. Early apoptotic cells (annexin V+/PI-) and late apoptotic cells (annexin V+/PI+) are quantified.
ADME/Pharmacokinetics
Caspase‑3 activation can be assessed using a colorimetric assay kit. Treated cells are lysed in ice‑cold lysis buffer (50 mM HEPES, pH 7.4, 5 mM CHAPS, 5 mM DTT). Cell lysates are cleared by centrifugation at 10,000×g for 10 minutes. The supernatant is incubated with the caspase‑3 substrate Ac‑DEVD‑pNA (200 uM) at 37degC for 2 hours. The release of p‑nitroaniline is measured at 405 nm using a microplate reader. Caspase‑3 activity is expressed as fold‑change relative to untreated controls.
Toxicity/Toxicokinetics
No specific pharmacokinetic data are available for 13,14‑dihydro‑15‑keto‑prostaglandin A2. As a prostaglandin metabolite, it is rapidly formed from PGA2 by the action of 15‑hydroxyprostaglandin dehydrogenase (15‑PGDH) and ∆13‑14 reductase. The compound is further metabolized by beta‑oxidation and omega‑oxidation pathways and is eliminated primarily in the urine. The half‑life of prostaglandin metabolites in human plasma is typically less than 5-10 minutes due to rapid clearance by the liver and lungs.
References

[1]. The stability of 13,14-dihydro-15 keto-PGE2. Prostaglandins. 1980 Jun;19(6):917-31.

Additional Infomation
15-Keto-13,14-Dihydroprostaglandin A2 is a prostaglandin.
No toxicity data (LD₅0) are available for 13,14‑dihydro‑15‑keto‑prostaglandin A2 in the literature. Prostaglandin metabolites are generally considered to have low acute toxicity, as they are endogenous compounds that are rapidly cleared. However, higher doses may cause gastrointestinal disturbances, hypotension, and uterine contractions due to residual prostaglandin‑like activity. The compound should be handled as a potentially hazardous chemical with appropriate personal protective equipment (lab coat, gloves, safety goggles).
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C20H30O4
Molecular Weight
334.45
Exact Mass
334.214
CAS #
74872-89-2
PubChem CID
5283042
Appearance
Typically exists as solid at room temperature
Density
1.0±0.1 g/cm3
Boiling Point
510.5±33.0 °C at 760 mmHg
Flash Point
276.6±21.9 °C
Vapour Pressure
0.0±2.8 mmHg at 25°C
Index of Refraction
1.499
LogP
3.1
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
4
Rotatable Bond Count
13
Heavy Atom Count
24
Complexity
476
Defined Atom Stereocenter Count
2
SMILES
CCCCCC(=O)CC[C@H]1C=CC(=O)[C@@H]1C/C=C\CCCC(=O)O
InChi Key
FMKLAIBZMCURLI-BFVRRIQPSA-N
InChi Code
InChI=1S/C20H30O4/c1-2-3-6-9-17(21)14-12-16-13-15-19(22)18(16)10-7-4-5-8-11-20(23)24/h4,7,13,15-16,18H,2-3,5-6,8-12,14H2,1H3,(H,23,24)/b7-4-/t16-,18+/m0/s1
Chemical Name
(Z)-7-[(1R,5S)-2-oxo-5-(3-oxooctyl)cyclopent-3-en-1-yl]hept-5-enoic 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 2.9900 mL 14.9499 mL 29.8998 mL
5 mM 0.5980 mL 2.9900 mL 5.9800 mL
10 mM 0.2990 mL 1.4950 mL 2.9900 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.

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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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