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WR99210

Cat. No. M8855
WR99210 Structure
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Biological Activity

WR99210 is a potent inhibitor of Plasmodium falciparum dihydrofolate reductase (DHFR), which is a major malarial drug target. It has subnanomolar potency for the wild type, double mutant and quadruple mutant dihydrofolate reductases.

Chemical Information
Molecular Weight 394.68
Formula C14H18Cl3N5O2
CAS Number 47326-86-3
Solubility (25°C) DMSO: 0.2 mg/mL (warmed)
Storage Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

References

[1] T Parks Remcho, et al. Regioisomerization of Antimalarial Drug WR99210 Explains the Inactivity of a Commercial Stock

[2] Fasila R Gaffar, et al. An amino acid substitution in the Babesia bovis dihydrofolate reductase-thymidylate synthase gene is correlated to cross-resistance against pyrimethamine and WR99210

[3] S M Kinyanjui, et al. The antimalarial triazine WR99210 and the prodrug PS-15: folate reversal of in vitro activity against Plasmodium falciparum and a non-antifolate mode of action of the prodrug

[4] M Hekmat-Nejad, et al. Plasmodium falciparum: kinetic interactions of WR99210 with pyrimethamine-sensitive and pyrimethamine-resistant dihydrofolate reductase

[5] K H Rieckmann, et al. Activity of PS-15 and its metabolite, WR99210, against Plasmodium falciparum in an in vivo-in vitro model

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