Triamterene

CAS# 396-01-0

Triamterene

Catalog No. BCC5074----Order now to get a substantial discount!

Product Name & Size Price Stock
Triamterene:50mg $65.00 In stock
Triamterene:100mg $111.00 In stock
Triamterene:250mg $260.00 In stock
Triamterene:500mg $455.00 In stock
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Chemical structure

Triamterene

3D structure

Chemical Properties of Triamterene

Cas No. 396-01-0 SDF Download SDF
PubChem ID 5546 Appearance Powder
Formula C12H11N7 M.Wt 253.26
Type of Compound N/A Storage Desiccate at -20°C
Solubility DMSO : 10 mg/mL (39.49 mM; Need ultrasonic)
H2O : < 0.1 mg/mL (insoluble)
Chemical Name 6-phenylpteridine-2,4,7-triamine
SMILES C1=CC=C(C=C1)C2=NC3=C(N=C2N)N=C(N=C3N)N
Standard InChIKey FNYLWPVRPXGIIP-UHFFFAOYSA-N
Standard InChI InChI=1S/C12H11N7/c13-9-7(6-4-2-1-3-5-6)16-8-10(14)18-12(15)19-11(8)17-9/h1-5H,(H6,13,14,15,17,18,19)
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of Triamterene

DescriptionTriamterene blocks epithelial Na+ channel (ENaC) in a voltage-dependent manner, which used as a mild diuretic. Target: Sodium Channel Triamterene blocked rENaC in a voltage-dependent manner, and was 100-fold less potent than amiloride at pH 7.5. At -90 mV and -40 mV, the IC50 values were 5 microM and 10 microM, respectively. The blockage by triamterene, which is a weak base with a pKa of 6.2, was dependent on the extracellular pH. The IC50 was 1 microM at pH 6.5 and only 17 microM at pH 8.5 [1]. Triamterene (TA) is partly eliminated by a first-pass-effect. The main metabolite of TA is OH-TA-ester, which is pharmacologically active [2].

References:
[1]. Busch, A.E., et al., Blockade of epithelial Na+ channels by triamterenes - underlying mechanisms and molecular basis. Pflugers Arch, 1996. 432(5): p. 760-6. [2]. Gilfrich, H.J., et al., Pharmacokinetics of triamterene after i.v. administration to man: determination of bioavailability. Eur J Clin Pharmacol, 1983. 25(2): p. 237-41.

Triamterene Dilution Calculator

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Triamterene Molarity Calculator

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Preparing Stock Solutions of Triamterene

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 3.9485 mL 19.7426 mL 39.4851 mL 78.9702 mL 98.7128 mL
5 mM 0.7897 mL 3.9485 mL 7.897 mL 15.794 mL 19.7426 mL
10 mM 0.3949 mL 1.9743 mL 3.9485 mL 7.897 mL 9.8713 mL
50 mM 0.079 mL 0.3949 mL 0.7897 mL 1.5794 mL 1.9743 mL
100 mM 0.0395 mL 0.1974 mL 0.3949 mL 0.7897 mL 0.9871 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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Background on Triamterene

Triamterene blocks epithelial Na+ channel (ENaC) in a voltage-dependent manner with IC50 of 4.5 μM.

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References on Triamterene

A role for ATP-sensitive potassium channels in the anticonvulsant effects of triamterene in mice.[Pubmed:26855365]

Epilepsy Res. 2016 Mar;121:8-13.

There are reports indicating that diuretics including chlorothiazide, furosemide, ethacrynic acid, amiloride and bumetanide can have anticonvulsant properties. Intracellular acidification appears to be a mechanism for the anticonvulsant action of some diuretics. This study was conducted to investigate whether or not Triamterene, a K(+)-sparing diuretic, can generate protection against seizures induced by intravenous or intraperitoneal pentylenetetrazole (PTZ) models. And to see if, Triamterene can withstand maximal electroshock seizure (MES) in mice. We also investigated to see if there is any connection between Triamterene's anti-seizure effect and ATP-sensitive K(+) (KATP) channels. Five days Triamterene oral administration (10, 20 and 40 mg/kg), significantly increased clonic seizure threshold which was induced by intravenous pentylenetetrazole. Triamterene (10, 20 and 40 mg/kg) treatment also increased the latency of clonic seizure and decreased its frequency in intraperitoneal PTZ model. Administration of Triamterene (20 mg/kg) also decreased the incidence of tonic seizure in MES-induced seizure. Co-administration of a KATP sensitive channel blocker, glibenclamide, in the 6th day, 60 min before intravenous PTZ blocked Triamterene's anticonvulsant effect. A KATP sensitive channel opener, diazoxide, enhanced Triamterene's anti-seizure effect in both intravenous PTZ or MES seizure models. At the end, Triamterene exerts anticonvulsant effect in 3 seizure models of mice including intravenous PTZ, intraperitoneal PTZ and MES. The anti-seizure effect of Triamterene probably is induced through KATP channels.

High performance liquid chromatography for simultaneous determination of xipamide, triamterene and hydrochlorothiazide in bulk drug samples and dosage forms.[Pubmed:26959547]

Acta Pharm. 2016 Mar;66(1):109-18.

A novel, simple and robust high-performance liquid chromatography (HPLC) method was developed and validated for simultaneous determination of xipamide (XIP), Triamterene (TRI) and hydrochlorothiazide (HCT) in their bulk powders and dosage forms. Chromatographic separation was carried out in less than two minutes. The separation was performed on a RP C-18 stationary phase with an isocratic elution system consisting of 0.03 mol L(-1) orthophosphoric acid (pH 2.3) and acetonitrile (ACN) as the mobile phase in the ratio of 50:50, at 2.0 mL min(-1) flow rate at room temperature. Detection was performed at 220 nm. Validation was performed concerning system suitability, limits of detection and quantitation, accuracy, precision, linearity and robustness. Calibration curves were rectilinear over the range of 0.195-100 mug mL(-1) for all the drugs studied. Recovery values were 99.9, 99.6 and 99.0 % for XIP, TRI and HCT, respectively. The method was applied to simultaneous determination of the studied analytes in their pharmaceutical dosage forms.

Synthesis of monodisperse molecularly imprinted microspheres with multi-recognition ability via precipitation polymerization for the selective extraction of cyromazine, melamine, triamterene and trimethoprim.[Pubmed:26595796]

J Chromatogr B Analyt Technol Biomed Life Sci. 2015 Dec 15;1007:127-31.

Through precipitation polymerization, three monodisperse molecularly imprinted polymers (MIPs) containing imprints of 2,4-diamino-6-methyl-1,3,5-triazine (DM), cyromazine (CY) or trimethoprim (TM), were synthesized using methacrylic acid as functional monomer, divinylbenzene as cross-linker, and a mixture of acetonitrile-toluene (90/10, v/v) as porogen. The morphology and selectivity of the MIPs were characterized and compared systematically. The MIPs had the best specific binding in pure acetonitrile, and the data of adsorption experiment were fitted well with Langmuir and Freundlich model. In addition, DM-MIPs showed the excellent binding and multi-recognition capability for CY, melamine (ME), Triamterene (TA) and TM, and the binding capacity were 7.18, 7.56, 5.66 and 5.45mumol/g, respectively. Due to the pseudo template and the ability of multi-recognition, DM-MIPs as sorbent material could avoid the effect of template leakage on quantitative analysis. Therefore, DM-MIPs were used as a solid-phase extraction material to enrich ME, CY, TA and TM from different bio-matrix samples for high performance liquid chromatography analysis. Under the optimized conditions, the recoveries of three spiked levels in different bio-matrix samples were ranged from 80.9% to 91.5% with RSD

Drug-Repositioning Screens Identify Triamterene as a Selective Drug for the Treatment of DNA Mismatch Repair Deficient Cells.[Pubmed:27913567]

Clin Cancer Res. 2017 Jun 1;23(11):2880-2890.

Purpose: The DNA mismatch repair (MMR) pathway is required for the maintenance of genome stability. Unsurprisingly, mutations in MMR genes occur in a wide range of different cancers. Studies thus far have largely focused on specific tumor types or MMR mutations; however, it is becoming increasingly clear that a therapy targeting MMR deficiency in general would be clinically very beneficial.Experimental Design: Based on a drug-repositioning approach, we screened a large panel of cell lines with various MMR deficiencies from a range of different tumor types with a compound drug library of previously approved drugs. We have identified the potassium-sparing diuretic drug Triamterene, as a novel sensitizing agent in MMR-deficient tumor cells, in vitro and in vivoResults: The selective tumor cell cytotoxicity of Triamterene occurs through its antifolate activity and depends on the activity of the folate synthesis enzyme thymidylate synthase. Triamterene leads to a thymidylate synthase-dependent differential increase in reactive oxygen species in MMR-deficient cells, ultimately resulting in an increase in DNA double-strand breaks.Conclusions: Conclusively, our data reveal a new drug repurposing and novel therapeutic strategy that has potential for the treatment of MMR deficiency in a range of different tumor types and could significantly improve patient survival. Clin Cancer Res; 23(11); 2880-90. (c)2016 AACR.

Description

Triamterene blocks epithelial Na+ channel (ENaC) in a voltage-dependent manner, which used as a mild diuretic.

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