Patent ID: 7939689

Claim:
A pharmaceutical composition comprising a compound of formula (I): wherein R 1 is selected from the group consisting of (C 2 -C 6 )alkyl, (C 2 -C 6 )alkenyl, (C 2 -C 6 )alkynyl, (C 3 -C 6 )cycloalkyl(C 1 -C 6 )alkyl, phenyl, and benzyl; R 2 and R 3 are each independently selected from the group consisting of (C 1 -C 6 )alkyl, (C 2 -C 6 )alkenyl, and (C 2 -C 6 )alkynyl, or R 2 and R 3 , together with the nitrogen atom to which they are attached, form a heterocyclic ring having from 5 to 7 atoms, and R 4 is selected from the group consisting of (C 1 -C 6 )alkyl, (C 2 -C 6 )alkenyl, and (C 2 -C 6 )alkynyl; provided that the sum of the number of carbon atoms in R 1 , R 2 , R 3 , and R 4 is greater than 7; and one or more water-immiscible solvents and one or more emulsifiers.