US PATENT SUBCLASS 562 / 448
.~.~.~.~.~.~.~ Plural nitrogens

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
400  DF  .~ Carboxylic acids and salts thereof {14}
405  DF  .~.~ Aromatic {13}
433  DF  .~.~.~ Nitrogen bonded directly to carbon of organic radical (e.g., amino acids, etc.) {9}
442  DF  .~.~.~.~ Nitrogen not bonded directly to a ring {2}
443  DF  .~.~.~.~.~ In same chain as carboxyl, or salt thereof {3}
444  DF  .~.~.~.~.~.~ Oxy {2}
448.~.~.~.~.~.~.~ Plural nitrogens

DEFINITION

Classification: 562/448

Plural nitrogens:

(under subclass 44) Compounds wherein the acid contains more than one covalently bonded nitrogen.

(1) Note. This subclass contains, for example: [figure] [figure]