c1cc(c(cc1NCc2coc3c2c(nc(n3)N)N)Cl)Cl 19146 IC50 > 3000 nM 10458 9 P00381 Dihydrofolate reductase c1c(cc(c(c1Cl)Cl)Cl)NCc2coc3c2c(nc(n3)N)N 19304 IC50 > 25000 nM 10458 9 P00381 Dihydrofolate reductase COc1cc(cc(c1OC)OC)NCc2coc3c2c(nc(n3)N)N 19194 IC50 > 26000 nM 10458 9 P00381 Dihydrofolate reductase