44 / | HD | FUEL AND RELATED COMPOSITIONS |
300 | DF | LIQUID FUELS (EXCLUDING FUELS THAT ARE EXCLUSIVELY MIXTURES OF LIQUID HYDROCARBONS) {31} |
412 | DF | .~ Organic nitrogen compound containing {12} |
432 | DF | .~.~ Plural nitrogens attached indirectly to each other by acyclic nonionic bonding {1} |
433 | .~.~.~ Chalcogen attached indirectly to one of the nitrogens by acyclic nonionic bonding |