US PATENT SUBCLASS 987 / 166-- .~.~.~ Contains the structure "carbocyclic ring"-P-(=X) (X) (X) where "--" indicates that a ring carbon of the carbocyclic ring may or may not be directly bonded to the P atom (9/38A3)

US PATENT SUBCLASS 987 / 166
.~.~.~ Contains the structure "carbocyclic ring"-P-(=X) (X) (X) where "--" indicates that a ring carbon of the carbocyclic ring may or may not be directly bonded to the P atom (9/38A3)

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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}
146	DF	.~.~ Pentavalent P having the structure (C)-P(=X) (X) (X) where X is chalcogen (9/38) {8}
166		.~.~.~ Contains the structure "carbocyclic ring"-P-(=X) (X) (X) where "--" indicates that a ring carbon of the carbocyclic ring may or may not be directly bonded to the P atom (9/38A3)

DEFINITION

Classification: 987/166

Contains the structure "carbocyclic ring" -P-(=X)(X)(X) where "--" indicates that a ring carbon of the carbocyclic ring may or may not be directly bonded to the P atom (9/38A3):

(under subclass 146) Subject matter wherein the C atom bonded directly to the P atom is part of a ring composed solely of carbon atoms, or is bonded directly or indirectly to a ring containing only C atoms, and wherein the 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 containing only carbon atoms. In the instance where the ring is aryl a carbon of that ring cannot be directly bonded to the P atom. See subclass 162 wherein the linkage of an aryl group to the P is solely through carbon. When the ring is other than aryl a carbon of that ring may or may not be bonded directly to the P atom.