US PATENT SUBCLASS 987 / 105-- .~.~.~.~ N atom of ring is bonded directly to a P atom or indirectly to a P atom other than through a ring atom of the five-membered ring (9/572E)

US PATENT SUBCLASS 987 / 105
.~.~.~.~ N atom of ring is bonded directly to a P atom or indirectly to a P atom other than through a ring atom of the five-membered ring (9/572E)

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}
49	DF	.~ Ring is devoid of a P or a metal atom and contains at least one hereto atom (O, S, N, Se, or Te) and may or may not contain C (9/547; 9/6524) {9}
90	DF	.~.~ Single N as only hetero atom in ring (9/553; 9/568) {6}
103	DF	.~.~.~ Five-membered ring containing a single N atom (9/572; 9/572G; 9/572K; 9/572K2; 9/572K4; 9/572R) {2}
105		.~.~.~.~ N atom of ring is bonded directly to a P atom or indirectly to a P atom other than through a ring atom of the five-membered ring (9/572E)

DEFINITION

Classification: 987/105

N atom of ring is bonded directly to a P atom or indirectly to a P atom other than through a ring atom of the five-membered ring (9/572E):

(under subclass 103) Subject matter wherein an extracyclic phosphorus atom is directly or indirectly bonded to the nitrogen atom of the ring.

(1) Note. Indirectly as used in this subclass is meant to

exclude compounds wherein a phosphorus atom is first bonded to a ring carbon, either directly or indirectly, and which ring carbon is eventually bonded to a nitrogen atom of the same ring.