US PATENT SUBCLASS 564 / 304
.~.~.~ Of benzene ring containing compounds

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}
303  DF  .~.~ Resolution per se of optical isomers {1}
304.~.~.~ Of benzene ring containing compounds

DEFINITION

Classification: 564/304

(under subclass 303) Processes wherein the optical isomers being separated contain a benzene ring.