Patent ID: 6992099

Claim:
A compound having the formula (II): wherein: R 21 is cyano, C(═S)NH 2 , C(═NOH)NH 2 or C(═NNH 2 )NH 2 ; R 22 is S(O) m R 23 ; R 23 is alkyl or haloalkyl; R 24 is OH, HC(O)O—, R 25 C(O)O—, R 25 OC(O)O—, R 25 R 25 N—C(O)—O— or R 25 S(O) n C(O)O—; R 25 is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, alkoxyalkyl, haloalkoxyalkyl, adamantyl, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, haloalkylaminoalkyl, di(haloalkyl)aminoalkyl, aryl optionally substituted, hetaryl optionally substituted, arylalkyl optionally substituted, hetarylalkyl optionally substituted, C 2 –C 6 alkenyl or C 2 –C 6 alkynyl; or two groups R 25 form together with the nitrogen to which they are attached a 3 to 7 membered ring which optionally has one or more additional heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; X is C—R 32 ; R 31 and R 32 are independently selected from the group consisting of halogen, hydrogen, CN, C 1 –C 3 alkyl and NO 2 ; R 33 is selected from the group consisting of halogen, haloalkyl, haloalkoxy, —S(O) r CF 3 and SF 5 ; r is selected from the group consisting of 0, 1 and 2; and when R 21 is cyano, m is selected from the group consisting of 1 and 2, or when R 21 is other than cyano, m is selected from the group consisting of 0, 1 and 2; or a veterinarily acceptable salt thereof; provided that when R 21 is cyano, then R 24 is not R 25 R 25 —N—C(O)—O—.