title: [Studies on the components in NTU shale oil. V. The Hofmann degradation of middle-layer base].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002849:Chromatography, Gas; D010578:Petroleum / Q000032:analysis; D011725:Pyridines / Q000032:analysis
chemical_list: D010578:Petroleum; D011725:Pyridines