3-deoxy-D-glycero-D-galacto-2-*nonulosonic acid A 112543-66-5, Information for 3-deoxy-D-glycero-D-galacto-2-*nonulosonic acid A 112543-66-5, Suppliers of 3-deoxy-D-glycero-D-galacto-2-*nonulosonic acid A 112543-66-5