A compound, or salt thereof, of formula: Wherein R 1 is selected from: CO 2 H or tetrazole and R 2 is selected from: H, halo, (C 1 -C 4)alkyl or halo-substituted(C 1 -C 4)alkyl, or R 1 is H and R 2 is CO 2 H or tetrazole; X is selected from: H, halo, (C 1 -C 4)alkyl, (C 1 -C 4)alkoxy, NR 8 R 9, halo-substituted(C 1 -C 4)alkyl, phenyl or a 5 to 6 membered heteroaryl containing 1 to 3 heteroatoms each independently selected from O, N, or S, where said phenyl or heteroaryl are optionally substituted with 1 to 2 substituents each independently selected from halo, (C 1 -C 4)alkyl, (C 1 -C 4)alkoxy, halo-substituted(C 1 -C 4)alkyl, hydroxy-substituted(C 1 -C 4)alkyl, (C 1 -C 4)alkylamino-substituted(C 1 -C 4)alkyl, dimethylamino-substituted(C 1 -C 4)alkyl; R 8 is selected from: H, or (C 1 -C 4)alkyl; R 9 is selected from: H, or (C 1 -C 4)alkyl; R 3 is where R 3a is selected from: H, (C 1 -C 4)alkyl or halo-substituted(C 1 -C 4)alkyl; R 3b is selected from: H, (C 1 -C 4)alkyl or taken together with R 3a forms a 3 to 7 membered saturated cycloalkyl or a 3 to 7 membered saturated heterocycle containing 1 to 2 heteroatoms selected from O, S or N; R 3c is selected from: H or CH 3; R 3d is selected from: H or CH 3; R 4 is selected from: wherein the dotted line indicates the point of attachment; R 5 is selected from: H or CH 3; R 6 is independently selected from: halo, nitrile, (C 1 -C 4)alkyl, halo-substituted(C 1 -C 4)alkyl, nitrile-substituted(C 1 -C 4)alkyl, (C 1 -C 4)alkoxy, halo-substituted(C 1 -C 4)alkoxy, nitrile-substituted(C 1 -C 4)alkoxy, (C 1 -C 4)alkylene, N-acetyl, trifluoroacetyl, (C 1 -C 4)alkylthio, halo-substituted thio, halo-substituted (C 1 -C 4)alkylthio, (C 3 -C 6)cycloalkyl, methylamino-substituted(C 1 -C 4)alkyl, dimethylamino-substituted(C 1 -C 4)alkyl, halo-substituted(C 1 -C 4) hydroxyalkyl, a 4 to 6 membered saturated heterocycle containing 1 to 2 heteroatoms selected from O, S or N, or a 5 to 6 membered heteroaryl containing 1 to 3 heteroatoms each independently selected from O, N, or S, where said heterocycle or heteroaryl are optionally substituted with 1 to 2 substituents each independently selected from (C 1 -C 4)alkyl, halo, hydroxyl, amino or (C 1 -C 4)alkoxy; R 7 is selected from: H or halo; n is 1, 2 or 3; m is 0, 1 or 2. R 1 is selected from: CO 2 H or tetrazole and R 2 is selected from: H, halo, (C 1 -C 4)alkyl or halo-substituted(C 1 -C 4)alkyl, or R 1 is H and R 2 is CO 2 H or tetrazole; X is selected from: H, halo, (C 1 -C 4)alkyl, (C 1 -C 4)alkoxy, NR 8 R 9, halo-substituted(C 1 -C 4)alkyl, phenyl or a 5 to 6 membered heteroaryl containing 1 to 3 heteroatoms each independently selected from O, N, or S, where said phenyl or heteroaryl are optionally substituted with 1 to 2 substituents each independently selected from halo, (C 1 -C 4)alkyl, (C 1 -C 4)alkoxy, halo-substituted(C 1 -C 4)alkyl, hydroxy-substituted(C 1 -C 4)alkyl, (C 1 -C 4)alkylamino-substituted(C 1 -C 4)alkyl, dimethylamino-substituted(C 1 -C 4)alkyl; R 8 is selected from: H, or (C 1 -C 4)alkyl; R 9 is selected from: H, or (C 1 -C 4)alkyl; R 3 is where R 3a is selected from: H, (C 1 -C 4)alkyl or halo-substituted(C 1 -C 4)alkyl; R 3b is selected from: H, (C 1 -C 4)alkyl or taken together with R 3a forms a 3 to 7 membered saturated cycloalkyl or a 3 to 7 membered saturated heterocycle containing 1 to 2 heteroatoms selected from O, S or N; R 3c is selected from: H or CH 3; R 3d is selected from: H or CH 3; R 4 is selected from: R 5 is selected from: H or CH 3; R 6 is independently selected from: halo, nitrile, (C 1 -C 4)alkyl, halo-substituted(C 1 -C 4)alkyl, nitrile-substituted(C 1 -C 4)alkyl, (C 1 -C 4)alkoxy, halo-substituted(C 1 -C 4)alkoxy, nitrile-substituted(C 1 -C 4)alkoxy, (C 1 -C 4)alkylene, N-acetyl, trifluoroacetyl, (C 1 -C 4)alkylthio, halo-substituted thio, halo-substituted (C 1 -C 4)alkylthio, (C 3 -C 6)cycloalkyl, methylamino-substituted(C 1 -C 4)alkyl, dimethylamino-substituted(C 1 -C 4)alkyl, halo-substituted(C 1 -C 4) hydroxyalkyl, a 4 to 6 membered saturated heterocycle containing 1 to 2 heteroatoms selected from O, S or N, or a 5 to 6 membered heteroaryl containing 1 to 3 heteroatoms each independently selected from O, N, or S, where said heterocycle or heteroaryl are optionally substituted with 1 to 2 substituents each independently selected from (C 1 -C 4)alkyl, halo, hydroxyl, amino or (C 1 -C 4)alkoxy; R 7 is selected from: H or halo; n is 1, 2 or 3; m is 0, 1 or 2.