435 / | HD | CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY |
41 | DF | MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26} |
132 | DF | .~ Preparing oxygen-containing organic compound {6} |
155 | .~.~ Containing hydroxy group {2} | |
156 | DF | .~.~.~> Aromatic |
157 | DF | .~.~.~> Acyclic {3} |