4-Bromo-1H-pyrrolo[2,3-b]pyridine-2-carboxylic acid

铬片, Chromium pieces

铬溅射靶, Chromium sputtering target

钴柱, Cobalt slug

钴箔, Cobalt foil

钴丝, Cobalt wire

钴棒, Cobalt rod

铜粉, Copper powder

铜粒, Copper shot

铜柱, Copper slug

铜箔, Copper foil