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... > LIFE SCIENCES > biology > biochemistry > biochemistry by substance > biochemical substances by activity or property > vitamins > water-soluble vitamins > vitamin B complex > nicotinic acid

... > PHYSICAL SCIENCES > chemistry > chemical substances > chemical elements and compounds > inorganic compounds > organic compounds > organic compounds by structure or composition > organic compounds by non-carbon element > organic compounds by non-metallic element > organic nitrogen compounds > heterocyclic nitrogen compounds > pyridines > nicotinic acid

... > PHYSICAL SCIENCES > chemistry > chemical substances > chemical substances by property > acids > organic acids > aromatic acids > nicotinic acid

... > PHYSICAL SCIENCES > chemistry > chemical substances > chemical elements and compounds > inorganic compounds > organic compounds > organic compounds by functional group > carbonyl compounds > organic acids > aromatic acids > nicotinic acid

... > PHYSICAL SCIENCES > chemistry > chemical substances > chemical elements and compounds > inorganic compounds > organic compounds > organic compounds by structure or composition > organic compounds by aliphatic or aromatic > aromatic compounds > aromatic acids > nicotinic acid