prov:value
| - H, C1 -C4 alkyl, hydroxy, C1 -C4 alkoxy, nitro, C1 -C10 alkylcarbonyl, --N(R12)R13, --NR5 R5a, CO2 R5, S(O)m R5, OR5, cyano, halo; C6 -C10 aryl optionally substituted with 1-3 groups selected from halogen, C1 -C6 alkoxy, C1 -C6 alkyl, CF3, S(O)m CH3, or --N(CH3)2 ; methylenedioxy when R6 is a substituent on aryl; or a heterocyclic ring system selected from pyridinyl, furanyl, thiazolyl, thienyl, p
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