US PATENT SUBCLASS 546 / 339
.~.~.~ Chalcogen attached indirectly to the six-membered hetero ring by nonionic bonding (e.g., sulfato betaines, etc.)

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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}
339.~.~.~ Chalcogen attached indirectly to the six-membered hetero ring by nonionic bonding (e.g., sulfato betaines, etc.) {3}
340  DF  .~.~.~.~> The chalcogen, X, is in a -C(=X)- group {1}
343  DF  .~.~.~.~> The six-membered hetero ring and another ring bonded directly to the same carbon
344  DF  .~.~.~.~> The chalcogen is in an -OH or -OM group (M is Group IA or Group IIA light metal)

DEFINITION

Classification: 546/339

Chalcogen attached indirectly to the six-membered hetero ring by nonionic bonding (e.g., sulfato betaines, etc.):

(under subclass 1) Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the six-membered hetero ring by nonionic bonding.

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