| 504 / | HD | PLANT PROTECTING AND REGULATING COMPOSITIONS |
| 116 | DF | PLANT GROWTH REGULATING COMPOSITIONS (E.G., HERBICIDES, ETC.) {9} |
| 189 | DF | .~ Organic active compound containing {19} |
| 194 | DF | .~.~ Phosphorus containing wherein the phosphorus is other than solely as part of an inorganic ion in an addition salt {5} |
| 201 | DF | .~.~.~ Nitrogen attached indirectly to the phosphorus by acyclic nonionic bonding {4} |
| 202 | | .~.~.~.~ The nitrogen is part of a cyano or isocyano group |