US PATENT SUBCLASS 546 / 22
.~.~.~ Phosphorus attached indirectly to the six-membered hetero ring by nonionic bonding

Current as of: June, 1999
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546 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {1}
1  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbons {24}
22.~.~.~ Phosphorus attached indirectly to the six-membered hetero ring by nonionic bonding {2}
23  DF  .~.~.~.~> Polycyclo ring system having the six-membered hetero ring as one of the cyclos
24  DF  .~.~.~.~> Chalcogen bonded directly to ring carbon of the six-membered hetero ring {1}

DEFINITION

Classification: 546/22

Phosphorus attached indirectly to the six-membered hetero ring by nonionic bonding:

(under subclass 1) Compounds wherein phosphorus is attached indirectly to the six-membered hetero ring by nonionic bonding.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]