Patent ID: 8592475

Claim:
A compound of Formula (I): wherein: R 1 and R 2 are independently selected from: hydrogen, halogen and C 1-4 alkyl, where R 6 is C 1-4 alkyl and R 7 is selected from hydrogen, C 1-4 alkyl and halogen; R 3 is selected from: hydrogen, halogen and C 1-4 alkyl; R 4 is selected from (CH 2 ) m aryl wherein the aryl is either unsubstituted or substituted, where m is 0 to 2; R 5 is selected from hydrogen and C 1-4 alkyl; X is selected from O and S; and n is 0 to 2; provided that one and only one of R 1 and R 2 is and further provided that at least one of R 1 , R 2 and R 3 is hydrogen; or a salt thereof including a pharmaceutically acceptable salt thereof.