trace element cobalt(2+) 2 58.9321 58.933 cas:22541-53-3 Co(2+) cobalt(2+) chebi_ontology cobaltous ion XLJKHNWPARRRJB-UHFFFAOYSA-N CHEBI:23337 Co(II) cobalt(2+) ion kegg.compound:C00175 gmelin:6853 COBALT (II) ION Co cobalt(II) cation pdb-ccd:CO cobalt(II) cation CHEBI:48827 [Co+2] Cobalt(2+) cobalt(2+) ion InChI=1S/Co/q+2 Co2+ cobalt(2+) CHEBI:48828