. . "A wide variety of substituents may be present on the aryl group including H, (C1 -C12)alkyl, halo (F, Cl, Br, I), (C1 -C12)alkoxy groups, aryloxy, phenoxy, phenyl, nitro, aldehyde, (C1 -C13)acyl, CO2 H, (C1 -C12)alkoxycarbonyl, CN, (C1 -C12)amide, sulfonyl, sulfoxyl, hydroxy, sulfide, hydroxy(C1 -C12)alkyl, amino (NH2) or (C1 -C12)mono- or dialkylamino groups." . .