Patent ID: 7820696

Claim:
An encapsulated formulation comprising a compound having the formula: wherein the NR 1 R 2 and NR 3 R 4 moieties are in the ortho, meta or para position; wherein X − is an anionic salt; wherein R 1 , R 2 , R 3 , or R 4 are independently selected from the group consisting of C 1-10 alkyl (linear or branched), alkenes (linear or branched), or wherein R 1 and R 2 or R 3 and R 4 taken together with the nitrogen atom to which they are attached form pyrrolidino or piperidino rings; wherein R 5 is selected from the group consisting of C 1-10 alkyl (linear or branched), alkenes (linear or branched), alkynes, substituted and unsubstituted aryl moieties and substituted and unsubstituted benzyl moieties and the encapsulated formulation is a controlled-release formulation.