has part has part has_part nicotinic acid biotin biotin riboflavin riboflavin vitamin B1 vitamin B1 vitamin B6 folic acid folic acid cobalamin (R)-pantothenic acid mixture B vitamin vitamin B complex Wikipedia:B_vitamin chebi_ontology CHEBI:75782 A mixture containing all eight of the B vitamins (B1, B2, B3, B5, B6, B7, B9, and B12). It is used as a dietary supplement and as a component of growth media for microorganisms. vitamin B mixture