US PATENT SUBCLASS 987 / 102-- .~.~.~.~.~ 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 pyridine ring (9/58E)

US PATENT SUBCLASS 987 / 102
.~.~.~.~.~ 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 pyridine ring (9/58E)

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}
99	DF	.~.~.~.~ Pyridine ring (9/58; 9/58G; 9/58R) {3}
102		.~.~.~.~.~ 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 pyridine ring (9/58E)

DEFINITION

Classification: 987/102

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 pyridine ring (9/58E):

(under subclass 99) Subject matter wherein an extracyclic phosphorus atom is directly or indirectly bonded to the nitrogen atom of the pyridine ring.

(1) Note. Indirectly as used in this subclass is meant to exclude compounds wherein a phosphorus atom is first bonded to a carbon of the pyridine ring, either directly or indirectly, and which carbon is eventually bonded to the pyridine ring nitrogen atom.