The transformation of one set of chemical substances to another through the breaking and forming of chemical bonds.
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4-((1S,2R)-2-Hydroxy-1-methyl-2-phenyl-ethyl)-4-methyl-4,5-dihydro-3H-4-azonia-cyclohepta[2,1-a;3,4-a']dinaphthalene; bromide
2-(4-Butyl-phenylamino)-3H-pyrido[2,3-d]pyrimidin-4-one
