| 423 / | HD | CHEMISTRY OF INORGANIC COMPOUNDS |
| 351 | DF | NITROGEN OR COMPOUND THEREOF (EXCEPT AMMONIUM SALT OF NON-NITROGEN ACID) {5} |
| 364 | | .~ Carbon containing {7} |
| 365 | DF | .~.~> And oxygen containing (e.g., fulminate, cyanate, etc.) |
| 366 | DF | .~.~> And sulfur containing (e.g., thiocyanate, etc.) |
| 367 | DF | .~.~> And iron containing (e.g., ferrocyanide, etc.) |
| 368 | DF | .~.~> Cyanamide radical containing {2} |
| 371 | DF | .~.~> Ternary compound {4} |
| 383 | DF | .~.~> Halogen containing |
| 384 | DF | .~.~> Binary (e.g., cyanogen, etc.) |