| 536 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES | 
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {1} | 
| 1.11 | DF | .~ Carbohydrates or derivatives {15} | 
| 18.7 | DF | .~.~ Nitrogen containing {13} | 
| 22.1 | DF | .~.~.~ N-glycosides, polymers thereof, metal derivatives (e.g., nucleic acids, oligonucleotides, etc.) {12} | 
| 26.1 | DF | .~.~.~.~ Phosphorus containing N-glycoside wherein the N is part of an N-hetero ring {9} | 
| 26.8 |  | .~.~.~.~.~ The N-hereto ring is six-membered and monocyclic (e.g., uridine-5'-mono- phosphate, etc.) |