US PATENT SUBCLASS 564 / 233
.~.~.~.~ Biguanides (i.e., HN=C(-HNH)-NH-(HNH-)C=NH, wherein substitution may be made for hydrogen only)

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}
225  DF  .~.~ Amidines (i.e., HN=CH-HNH, wherein substition may be made for hydrogen only) {5}
230  DF  .~.~.~ Guanidines (i.e., HN=C(-HNH)-HNH, wherein substitution may be made for hydrogen only) {6}
233.~.~.~.~ Biguanides (i.e., HN=C(-HNH)-NH-(HNH-)C=NH, wherein substitution may be made for hydrogen only) {1}
234  DF  .~.~.~.~.~> Benzene ring containing {1}

DEFINITION

Classification: 564/233

(under subclass 230) Compounds which are biguanides, containing the grouping [figure]

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