Patent ID: 8394808

Claim:
A compound of Formula (I): wherein: R 1 is hydrogen or C 1-4 alkyl which optionally is substituted with one or more groups selected from CN or CF 3 ; R 2 is C 3-10 unsubstituted alkyl, C 1-10 alkyl substituted with one or more groups selected from fluorine, CN, C 5 alkenyl, unbranched C 4 alkenyl, or C 1-4 alkyl substituted with cycloalkyl; and R 3 is halogen or CN; or a pharmaceutically acceptable salt thereof; and provided that: (i) when R 3 is Cl, and R 1 is ethyl, R 2 is other than propyl; (ii) when R 3 is Br, and R 1 is propyl, R 2 is other than propyl; (iii) when R 3 is Cl or Br, and R 1 is butyl, R 2 is other than butyl; and (iv) when R 1 is C 1-4 alkyl, CH 2 CN, or (CH 2 ) 3 CF 3 , R 2 is other than branched alkyl.