US PATENT SUBCLASS 564 / 425
.~.~.~.~ By salt formation

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}
305  DF  .~.~ Benzene ring containing {24}
424  DF  .~.~.~ Separating isomers {1}
425.~.~.~.~ By salt formation

DEFINITION

Classification: 564/425

(under subclass 424) Processes wherein the separation of the isomers is effected by salt formation.