A compound, or a stereoisomer of said compound, or a pharmaceutically acceptable salt of said compound or said stereoisomer, said compound having the structural Formula: or a tautomer thereof having the structural Formula (II'): wherein: W is selected from the group consisting of S, S, and S 2; ring C is selected from the group consisting of: each R 1 (when present) is independently selected from the group consisting of: H, halogen, -OH, alkyl, alkoxy, -alkyl-OH, haloalkyl, haloalkoxy, heteroalkyl, haloheteroalkyl, cycloalkyl, -alkyl-cycloalkyl, -O-cycloalkyl, -O-alkyl-cycloalkyl, heterocycloalkyl, -alkyl-heterocycloalkyl, -O-heterocycloalkyl, and -O-alkyl-heterocycloalkyl, each R 1H is independently selected from the group consisting of: H, alkyl, -alkyl-OH, haloalkyl, heteroalkyl, haloheteroalkyl, cycloalkyl, -alkyl-cycloalkyl, heterocycloalkyl, -alkyl-heterocycloalkyl, R 9 is H; n is 1; ring A is phenyl, pyridyl or thienyl, such that the moiety: has the form: or m is 0 or 1; each R 2 group (when present) is independently selected from the group consisting of halogen, -CN, -SF 5, -NHCH 3, -N(CH 3) 2, -OCH 3, -OCH 2 CH 3, -O-cyclopropyl, -S(CH 3), methyl, ethyl, propyl, cyclopropyl, -CH 2 -cyclopropyl, -C≡C-CH 3, -CF 3, -CHF 2, -C OH, -C OCH 3, -C OCH 2 CH 3, -OCF 3 and -OCHF 2; -L 1 - is a bond or a divalent moiety selected from the group consisting of -NHC - and -C NH-; ring B is selected from the group consisting of benzimidazolyl, benzofuranyl, benzoisothiazole, benzoisoxazole, benzothiazole, benzothiophenyl, benzoxazole, furanyl, cyclobutyl, cyclohexyl, cyclopentyl, cyclopropyl, imidazopyridyl, imidazothiazoyl, imidazothiadiazolyl, imidazolyl, indazolyl, indolyl, isothiazoyl, isoxazolopyridyl, isoxazolyl, morpholinoyl, oxadiazolyl, oxazolyl, oxetanyl, phenyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridyl, pyrimidinyl, pyrrolyl, pyrrolopyridinyl, pyrrolopyrimidinyl, pyrazolopyridinyl, tetrahydrofuranyl, tetrahydropyranyl, thiadiazolyl, thiazolyl, thienyl, triazolyl; p is 0 or more; each R 3 group (when present) is independently selected from the group consisting of halogen, -CN, -SF 5, -NHCH 3, -N(CH 3) 2, -OCH 3, -OCH 2 CH 3, -O-cyclopropyl, -S(CH 3), methyl, ethyl, propyl, cyclopropyl, -CH 2 -cyclopropyl, -C≡C-CH 3, -CF 3, -CHF 2, -C OH, -C OCH 3, -C OCH 2 CH 3, -OCF 3 and -OCHF 2; wherein the maximum value of p is the maximum number of available substitutable hydrogen atoms on ring B. W is selected from the group consisting of S, S, and S 2; ring C is selected from the group consisting of: each R 1 (when present) is independently selected from the group consisting of: H, halogen, -OH, alkyl, alkoxy, -alkyl-OH, haloalkyl, haloalkoxy, heteroalkyl, haloheteroalkyl, cycloalkyl, -alkyl-cycloalkyl, -O-cycloalkyl, -O-alkyl-cycloalkyl, heterocycloalkyl, -alkyl-heterocycloalkyl, -O-heterocycloalkyl, and -O-alkyl-heterocycloalkyl, each R 1H is independently selected from the group consisting of: H, alkyl, -alkyl-OH, haloalkyl, heteroalkyl, haloheteroalkyl, cycloalkyl, -alkyl-cycloalkyl, heterocycloalkyl, -alkyl-heterocycloalkyl, R 9 is H; n is 1; ring A is phenyl, pyridyl or thienyl, such that the moiety: has the form: or m is 0 or 1; each R 2 group (when present) is independently selected from the group consisting of halogen, -CN, -SF 5, -NHCH 3, -N(CH 3) 2, -OCH 3, -OCH 2 CH 3, -O-cyclopropyl, -S(CH 3), methyl, ethyl, propyl, cyclopropyl, -CH 2 -cyclopropyl, -C≡C-CH 3, -CF 3, -CHF 2, -C OH, -C OCH 3, -C OCH 2 CH 3, -OCF 3 and -OCHF 2; -L 1 - is a bond or a divalent moiety selected from the group consisting of -NHC - and -C NH-; ring B is selected from the group consisting of benzimidazolyl, benzofuranyl, benzoisothiazole, benzoisoxazole, benzothiazole, benzothiophenyl, benzoxazole, furanyl, cyclobutyl, cyclohexyl, cyclopentyl, cyclopropyl, imidazopyridyl, imidazothiazoyl, imidazothiadiazolyl, imidazolyl, indazolyl, indolyl, isothiazoyl, isoxazolopyridyl, isoxazolyl, morpholinoyl, oxadiazolyl, oxazolyl, oxetanyl, phenyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridyl, pyrimidinyl, pyrrolyl, pyrrolopyridinyl, pyrrolopyrimidinyl, pyrazolopyridinyl, tetrahydrofuranyl, tetrahydropyranyl, thiadiazolyl, thiazolyl, thienyl, triazolyl; p is 0 or more; each R 3 group (when present) is independently selected from the group consisting of halogen, -CN, -SF 5, -NHCH 3, -N(CH 3) 2, -OCH 3, -OCH 2 CH 3, -O-cyclopropyl, -S(CH 3), methyl, ethyl, propyl, cyclopropyl, -CH 2 -cyclopropyl, -C≡C-CH 3, -CF 3, -CHF 2, -C OH, -C OCH 3, -C OCH 2 CH 3, -OCF 3 and -OCHF 2; wherein the maximum value of p is the maximum number of available substitutable hydrogen atoms on ring B.