| 536 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | 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} |
| 27.1 | DF | .~.~.~.~ N-glycosides wherein the N is part of an N-hetero ring which hetero ring is part of a polycyclo ring system containing an N-hetero ring and an additional hetero ring (e.g., rebeccamycin, etc.) {3} |
| 27.13 | DF | .~.~.~.~.~ Bicyclic ring system consisting of the N-hetero ring fused to another hetero ring (e.g., 2-azaadenines, 6-azaadenines, etc.) {2} |
| 27.2 | DF | .~.~.~.~.~.~ The bicyclic ring system consists of a 1,3-diazine ring, which may be hydrogenated, fused to a five-membered N-hetero ring (e.g., purine isoesters like tubercidin, toyocamycin, sangivamycin, sparsomycin A, etc.) {1} |
| 27.21 | DF | .~.~.~.~.~.~.~ The five-membered N-hetero ring is 1,3-diazole, which may be hydrogenated (e.g., 6-chloropurine nucleoside, nebularin, etc.) {6} |
| 27.8 | DF | .~.~.~.~.~.~.~.~ Chalcogen bonded directly to the 6- or 2-position of a purine ring system (e.g., inosine, etc.) {1} |
| 27.81 |  | .~.~.~.~.~.~.~.~.~ Nitrogen, other than nitro or nitroso, bonded directly to the 2-position of the purine ring system (e.g., guanosine, etc.) |