DHODH Inhibitor, DSM1-Calbiochem

C₁₆H₁₃N₅

275.31

A cell-permeable triazolopyrimidine compound that potently inhibits malaria parasite Plasmodium falciparum dihydroorotate dehydrogenase- (PfDHODH-) catalyzed electron transfer from FMNH₂ to Coenzyme Q₁₀ (CoQ or ubiquinone) in a potent (IC₅₀ = 47 nM), CoQ-competitive (K_i = 15 nM), and species-specific manner, without affecting PfDHODH-catalyzed electron transfer from DHO to FMN or the enzymatic activity of human DHODH (<5% inhibition at 100 µM). Reported to inhibit the proliferation of P. falciparum parasites (EC₅₀ = 79 nM against 3D7 strain) in vitro, including the drug-resistant strain Dd2 (EC₅₀ = 140 nM), while displaying no inhibitory potency against murine lymphocytic leukemia cell line L1210 even at concentrations as high as 10 µM. DSM1 is not recommended for in vivo use due to reduced plasma exposure upon repeat dosing in mice.

Please note that the molecular weight for this compound is batch-specific due to variable water content. Please refer to the vial label or the certificate of analysis for the batch-specific molecular weight. The molecular weight provided represents the baseline molecular weight without water.
A cell-permeable triazolopyrimidine compound that potently inhibits malaria parasite Plasmodium falciparum dihydroorotate dehydrogenase- (PfDHODH-) catalyzed electron transfer from FMNH₂ to Coenzyme Q₁₀ (CoQ or ubiquinone) in a potent (IC₅₀ = 47 nM), CoQ-competitive (K_i = 15 nM), and species-specific manner, without affecting PfDHODH-catalyzed electron transfer from DHO to FMN or the enzymatic activity of human DHODH (<5% inhibition at 100 µM). Reported to inhibit the proliferation of P. falciparum parasites (EC₅₀ = 79 nM against 3D7 strain) in vitro, including the drug-resistant strain Dd2 (EC₅₀ = 140 nM), while displaying no inhibitory potency against murine lymphocytic leukemia cell line L1210 even at concentrations as high as 10 µM. DSM1 is not recommended for in vivo use due to reduced plasma exposure upon repeat dosing in mice.
DHODH Inhibitor, DSM1, is a highly potent, competitive, tight-binding inhibitor of Plasmodium falciparum dihydroorotate dehydrogenase (IC₅₀ = 47 nM; K_i = 15 nM).

Cell permeable: yes
Primary Target
Pf*DHODH

Toxicity: Standard Handling (A)

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Guler, J.L., et al. 2013. PLoS Pathog.9, e1003375.

Ke, H., et al. 2011. Eukaryot. Cell.10, 1053.
Ganesan, S.M., et al. 2011. Mol. Biochem. Parasitol.177, 29.
Booker, M.L., et al. 2010. J. Biol. Chem.285, 33054.
Gujjar, R., et al. 2009. J. Med. Chem.52, 1864.
Phillips, M.A., et al. 2008. J. Med. Chem.51, 3649.

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

100

≥97% (HPLC)

solid

15 nM K_i

Calbiochem^®

OK to freeze
protect from light

off-white

DMSO: 50 mg/mL

2-8℃

11 - Combustible Solids

WGK 3