A compound selected from the group consisting of (a) Formula Ia or a salt thereof, (b) Formula Ic or a salt thereof, (c) Formula Id or a salt thereof, (d) Formula IIa or a salt thereof, (e) Formula IIb or a salt thereof, (f) Formula IIc or a salt thereof, and (g) Formula IId or a salt thereof, wherein, R 1 and R 5 are independently selected from the group consisting of hydrogen, CH 3, F, Cl, Br, CF 3 and OCF 3; R 2 and R 4 are independently selected from the group consisting of hydrogen, F, Cl, Br, and CF 3; R 3 is selected from the group consisting of hydrogen, CH 3, CF 3, F, Cl, Br, OCF 3, OCH 3, CN, and C O; R 6, R 7, R 8, and R 9 are independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, heterocyclyl, and halogen when the compound is of Formula Ia or IIa; R 6, R 8 and R 9 are independently selected from the group consisting of hydrogen, F, Cl, Br, CH 3, and OCF 3 when the compound is of Formula Ic, or IIc; R 7, R 8 and R 9 are independently selected from the group consisting of hydrogen, F, Cl, Br, CH 3, OCF 3 when the compound is of Formula IIb; or R 6 through R 13 are independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, heterocyclyl, and halogen when the compound is of Formula Id or IId; and E is O or S. (a) Formula Ia or a salt thereof, (b) Formula Ic or a salt thereof, (c) Formula Id or a salt thereof, (d) Formula IIa or a salt thereof, (e) Formula IIb or a salt thereof, (f) Formula IIc or a salt thereof, and (g) Formula IId or a salt thereof, wherein, R 1 and R 5 are independently selected from the group consisting of hydrogen, CH 3, F, Cl, Br, CF 3 and OCF 3; R 2 and R 4 are independently selected from the group consisting of hydrogen, F, Cl, Br, and CF 3; R 3 is selected from the group consisting of hydrogen, CH 3, CF 3, F, Cl, Br, OCF 3, OCH 3, CN, and C O; R 6, R 7, R 8, and R 9 are independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, heterocyclyl, and halogen when the compound is of Formula Ia or IIa; R 6, R 8 and R 9 are independently selected from the group consisting of hydrogen, F, Cl, Br, CH 3, and OCF 3 when the compound is of Formula Ic, or IIc; R 7, R 8 and R 9 are independently selected from the group consisting of hydrogen, F, Cl, Br, CH 3, OCF 3 when the compound is of Formula IIb; or R 6 through R 13 are independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, heterocyclyl, and halogen when the compound is of Formula Id or IId; and E is O or S. R 1 and R 5 are independently selected from the group consisting of hydrogen, CH 3, F, Cl, Br, CF 3 and OCF 3; R 2 and R 4 are independently selected from the group consisting of hydrogen, F, Cl, Br, and CF 3; R 3 is selected from the group consisting of hydrogen, CH 3, CF 3, F, Cl, Br, OCF 3, OCH 3, CN, and C O; R 6, R 7, R 8, and R 9 are independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, heterocyclyl, and halogen when the compound is of Formula Ia or IIa; R 6, R 8 and R 9 are independently selected from the group consisting of hydrogen, F, Cl, Br, CH 3, and OCF 3 when the compound is of Formula Ic, or IIc; R 7, R 8 and R 9 are independently selected from the group consisting of hydrogen, F, Cl, Br, CH 3, OCF 3 when the compound is of Formula IIb; or R 6 through R 13 are independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, heterocyclyl, and halogen when the compound is of Formula Id or IId; and E is O or S.