| 558 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
|
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {21} |
| 70 | DF | .~ Phosphorus esters (i.e., compounds having the phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen, and wherein the carbon may be single bonded to any atom but may be multiple bonded only to carbon) {18} |
| 177 | DF | .~.~ Chalcogen attached indirectly to the phosphorus by acyclic nonionic bonding {2} |
| 178 | DF | .~.~.~ The chalcogen, X, is in a -C(=X)- group {1} |
| 179 |  | .~.~.~.~ The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens {3} |
| 180 | DF | .~.~.~.~.~> Plural -C(=X)X- groups attached indirectly to the phosphorus by acyclic nonionic bonding |
| 181 | DF | .~.~.~.~.~> The carbon of the -C(=X)X- group is bonded directly to the phosphorus or to nitrogen which is bonded directly to the phosphorus |
| 182 | DF | .~.~.~.~.~> Acyclic carbon chain containing carbon to carbon unsaturation attached directly or indirectly to the phosphorus by acyclic nonionic bonding |