US PATENT SUBCLASS 534 / 598
.~.~.~ Replacement of halogen by amino nitrogen

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534 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8}
573  DF  .~ Azo {51}
588  DF  .~.~ Process utilizing azo compound as reactant {13}
598.~.~.~ Replacement of halogen by amino nitrogen

DEFINITION

Classification: 534/598

(under subclass 588) Processes whereby halogen is replaced by an amino nitrogen.