Patent ID: 6936640

Claim:
A compound of the following formula: wherein: n is a whole number of from 1 to 100; R 1 and R 2 are the same or different and are selected from the group consisting of alkyl (C 1 –C 10 ), aryl, and arylalkyl (C 3 –C 16 ), all of which may optionally contain one or more heteroatoms; X is selected from the group consisting of alkyl (C 2 –C 16 ), aryl, and arylalkyl (C 3 –C 12 ); Y is selected from the group consisting of alkyl (C 2 –C 16 ), aryl, and arylalkyl (C 3 –C 12 ); and Q is selected from the group consisting of alkyl (C 2 –C 20 ), aryl, arylalkyl (C 3 –C 20 ), amino alkyl (C 2 –C 20 ), alkenyl (C 2 –C 20 ), and alkylalkenyl (C 4 –C 20 ), all of which may optionally contain one or more quaternary ammonium moieties or heteroatoms; or a pharmaceutically acceptable salt thereof.