US PATENT SUBCLASS 987 / 98-- .~.~.~.~.~ N of ring is bonded directly to a P atom or is indirectly bonded to a P atom other than through a ring atom of the hydrogenated pyridine ring (9/59E)

US PATENT SUBCLASS 987 / 98
.~.~.~.~.~ N of ring is bonded directly to a P atom or is indirectly bonded to a P atom other than through a ring atom of the hydrogenated pyridine ring (9/59E)

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}
92	DF	.~.~.~ Six atoms in ring containing the single N atom (9/576) {5}
96	DF	.~.~.~.~ Hydrogenated pyridine ring (9/59; 9/59G; 9/59K; 9/59K2; 9/59K4; 9/59R) {2}
98		.~.~.~.~.~ N of ring is bonded directly to a P atom or is indirectly bonded to a P atom other than through a ring atom of the hydrogenated pyridine ring (9/59E)

DEFINITION

Classification: 987/98

N of ring is bonded directly to a P atom or is indirectly bonded to a P atom other than through a ring atom of the hydrogenated pyridine ring (9/59E):

(under subclass 96) 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.