US PATENT SUBCLASS 987 / 177
.~.~.~ Contains the structure "carbocyclic ring"-P(=X) (C) (X-C) where "--" indicates that a ring carbon of the carbocyclic ring may or may not be directly bonded to the P atom (9/32A3; 9/32A4; 9/32A7)

Current as of: June, 1999
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987 /   HD   ORGANIC COMPOUNDS CONTAINING A Bi, Sb, As, OR P ATOM OR CONTAINING A METAL ATOM OF THE 6TH TO 8TH GROUP OF THE PERIODIC SYSTEM

30  DF  PHOSPHORUS COMPOUNDS (9/02; 9/06) {15}
116  DF  .~ Contains at least one (C)-P bond (9/28) {19}
171  DF  .~.~ Pentavalent P having the structure (C)2-P(=X) (X-C) where X is chalcogen (9/32) {9}
177.~.~.~ Contains the structure "carbocyclic ring"-P(=X) (C) (X-C) where "--" indicates that a ring carbon of the carbocyclic ring may or may not be directly bonded to the P atom (9/32A3; 9/32A4; 9/32A7)

DEFINITION

Classification: 987/177

Contains the structure "carbocyclic ring" -P(=X) (C) (X-C) where "--" indicates that a ring carbon of the carbocyclic ring may or may not be directly bonded to the P atom (9/32A3; 9/32A4; 9/32A7):

(under subclass 171) Subject matter wherein a C atom bonded directly to the P atom is part of a ring system composed solely of carbon atoms or is bonded directly or indirectly to a ring containing only carbon atoms and wherein the indirect linkage to the C atom is not through the P atom.

(1) Note. The ring composed solely of carbon atoms can be aryl or any ring system containing only carbon atoms.