A compound of the Formula IX: wherein: R 2 and R 3 are taken together to form a fused benzene ring, a fused pyridine ring, a fused cyclohexene ring, or a fused tetrahydropyridine ring; wherein the fused benzene ring, fused pyridine ring, fused cyclohexene ring, or fused tetrahydropyridine ring is either unsubstituted or substituted by one or more R groups; R is selected from the group consisting of halogen, hydroxy, alkyl, alkoxy, haloalkyl, -C Oalkyl, -C OCH 2 Ph, -C Oaryl, amino, alkylamino, dialkylamino, aryl, arylalkylenyl, aryloxyalkylenyl, arylalkyleneoxy, aryloxy, heteroaryl, heteroarylalkylenyl, heteroaryloxyalkylenyl, heteroarylalkyleneoxy, and heteroaryloxy, wherein the alkyl, aryl, arylalkylenyl, aryloxyalkylenyl, arylalkyleneoxy, aryloxy, heteroaryl, heteroarylalkylenyl, heteroaryloxyalkylenyl, heteroarylalkyleneoxy, and heteroaryloxy groups can be unsubstituted or substituted by one or more substituents independently selected from the group consisting of alkyl, alkoxy, halogen, haloalkyl, hydroxy, hydroxyalkylenyl, alkoxyalkylenyl, arylalkyleneoxy, nitrile, amino, alkylamino, and dialkylamino; R 1 is-X-N(R 4)-C(=N-R 5)-N R 6; X is selected from the group consisting of alkylene, alkenylene, and alkynylene, wherein any of the alkylene, alkenylene, and alkynylene groups can be optionally interrupted by one or more -O- groups; R 4 is selected from the group consisting of hydrogen, alkyl, arylalkylenyl, alkoxyalkylenyl, aryloxyalkylenyl, benzyloxyalkylenyl, aryl-(CH 2) 2-6 -O-alkylenyl, and cycloalkylalkylenyl; wherein any of the alkyl, arylalkylenyl, alkoxyalkylenyl, aryloxyalkylenyl, benzyloxyalkylenyl, aryl-(CH 2) 2-6 -O-alkylenyl, and cycloalkylalkylenyl groups can be either unsubstituted or substituted with one or more substituents independently selected from the group consisting of halogen, hydroxy, alkyl, alkoxy, haloalkyl, and nitrile; R 5 and R 6 are independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, aryl, arylalkylenyl, aryloxyalkylenyl, heteroaryl, heteroarylalkylenyl, heteroaryloxyalkylenyl, cycloalkylalkylenyl, aryl-(CH 2) 2-6 -O-alkylenyl, benzyloxyalkylenyl, and -C Oalkyl; wherein any of the alkyl, cycloalkyl, aryl, arylalkylenyl, aryloxyalkylenyl, heteroaryl, heteroarylalkylenyl, heteroaryloxyalkylenyl, cycloalkylalkylenyl, aryl-(CH 2) 2-6 -O-alkylenyl, and benzyloxyalkylenyl groups can be either unsubstituted or substituted with one or more substituents independently selected from the group consisting of halogen, hydroxy, alkoxy, alkyl, haloalkyl, cycloalkyl, nitrile, aryl, heteroaryl, and dialkylamino; or a pharmaceutically acceptable salt thereof. R 2 and R 3 are taken together to form a fused benzene ring, a fused pyridine ring, a fused cyclohexene ring, or a fused tetrahydropyridine ring; wherein the fused benzene ring, fused pyridine ring, fused cyclohexene ring, or fused tetrahydropyridine ring is either unsubstituted or substituted by one or more R groups; R is selected from the group consisting of halogen, hydroxy, alkyl, alkoxy, haloalkyl, -C Oalkyl, -C OCH 2 Ph, -C Oaryl, amino, alkylamino, dialkylamino, aryl, arylalkylenyl, aryloxyalkylenyl, arylalkyleneoxy, aryloxy, heteroaryl, heteroarylalkylenyl, heteroaryloxyalkylenyl, heteroarylalkyleneoxy, and heteroaryloxy, wherein the alkyl, aryl, arylalkylenyl, aryloxyalkylenyl, arylalkyleneoxy, aryloxy, heteroaryl, heteroarylalkylenyl, heteroaryloxyalkylenyl, heteroarylalkyleneoxy, and heteroaryloxy groups can be unsubstituted or substituted by one or more substituents independently selected from the group consisting of alkyl, alkoxy, halogen, haloalkyl, hydroxy, hydroxyalkylenyl, alkoxyalkylenyl, arylalkyleneoxy, nitrile, amino, alkylamino, and dialkylamino; R 1 is-X-N(R 4)-C(=N-R 5)-N R 6; X is selected from the group consisting of alkylene, alkenylene, and alkynylene, wherein any of the alkylene, alkenylene, and alkynylene groups can be optionally interrupted by one or more -O- groups; R 4 is selected from the group consisting of hydrogen, alkyl, arylalkylenyl, alkoxyalkylenyl, aryloxyalkylenyl, benzyloxyalkylenyl, aryl-(CH 2) 2-6 -O-alkylenyl, and cycloalkylalkylenyl; wherein any of the alkyl, arylalkylenyl, alkoxyalkylenyl, aryloxyalkylenyl, benzyloxyalkylenyl, aryl-(CH 2) 2-6 -O-alkylenyl, and cycloalkylalkylenyl groups can be either unsubstituted or substituted with one or more substituents independently selected from the group consisting of halogen, hydroxy, alkyl, alkoxy, haloalkyl, and nitrile; R 5 and R 6 are independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, aryl, arylalkylenyl, aryloxyalkylenyl, heteroaryl, heteroarylalkylenyl, heteroaryloxyalkylenyl, cycloalkylalkylenyl, aryl-(CH 2) 2-6 -O-alkylenyl, benzyloxyalkylenyl, and -C Oalkyl; wherein any of the alkyl, cycloalkyl, aryl, arylalkylenyl, aryloxyalkylenyl, heteroaryl, heteroarylalkylenyl, heteroaryloxyalkylenyl, cycloalkylalkylenyl, aryl-(CH 2) 2-6 -O-alkylenyl, and benzyloxyalkylenyl groups can be either unsubstituted or substituted with one or more substituents independently selected from the group consisting of halogen, hydroxy, alkoxy, alkyl, haloalkyl, cycloalkyl, nitrile, aryl, heteroaryl, and dialkylamino; or a pharmaceutically acceptable salt thereof.