US PATENT SUBCLASS 558 / 183
.~.~.~ Plural carbons bonded directly to the same chalcogen which is attached indirectly to the phosphorus by acyclic nonionic bonding (e.g., ethers, etc.)

Current as of: June, 1999
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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}
183.~.~.~ Plural carbons bonded directly to the same chalcogen which is attached indirectly to the phosphorus by acyclic nonionic bonding (e.g., ethers, etc.) {6}
184  DF  .~.~.~.~> The chalcogen is part of a -S(=O)- or a -S(=O)(=O)- group (e.g., sulfones, etc.)
185  DF  .~.~.~.~> Nitrogen bonded directly to the phosphorus
186  DF  .~.~.~.~> Plural ether oxygens or thioether sulfurs attached indirectly to the phosphorus by acyclic nonionic bonding
187  DF  .~.~.~.~> The chalcogen is bonded directly to a benzene ring and to acyclic carbon
188  DF  .~.~.~.~> Halogen attached directly or indirectly to the phosphorus by acyclic nonionic bonding
189  DF  .~.~.~.~> Carbon bonded directly to the phosphorus

DEFINITION

Classification: 558/183

(under subclass 177) Compounds wherein plural carbons are bonded directly to the chalcogen, which chalcogen is attached indirectly to the phosphorus by acyclic nonionic bonding.