Salts of a Dihydrochinazolinderivats

The invention relates to besylate and tosylate salts of {8-fluoro-2- [4- (3-methoxyphenyl) piperazin-1-yl] -3- [2-methoxy-5- (trifluoromethyl) phenyl] -3,4-dihydroquinazolin -4-yl} acetic acid, and solvates thereof, their use for the treatment and / or prophylaxis of viral infections as well as their use for the preparation of medicaments for the treatment and / or prophylaxis of diseases, in particular the use as antiviral agents, especially against cytomegaloviruses.