Heterocyclic compounds containing rings having nitrogen, oxygen and sulfur atoms as the only ring hetero atoms [2]
291
/
02
•
not condensed with other rings [2]
291
/
04
•
•
Five-membered rings [2]
291
/
06
•
•
Six-membered rings [2]
291
/
08
•
condensed with carbocyclic rings or ring systems [2]
293
/
00
Heterocyclic compounds containing rings having nitrogen and selenium or nitrogen and tellurium, with or without oxygen or sulfur atoms, as the ring hetero atoms [2]
293
/
02
•
not condensed with other rings [2]
293
/
04
•
•
Five-membered rings [2]
293
/
06
•
•
•
Selenazoles; Hydrogenated selenazoles [2]
293
/
08
•
•
Six-membered rings [2]
293
/
10
•
condensed with carbocyclic rings or ring systems [2]
293
/
12
•
•
Selenazoles; Hydrogenated selenazoles [2]
295
/
00
Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms [2]
295
/
02
•
containing only hydrogen and carbon atoms in addition to the ring hetero elements [2]
295
/
023
•
•
Preparation; Separation; Stabilisation; Use of additives [5]
295
/
027
•
•
containing only one hetero ring [5]
295
/
03
•
•
•
with the ring nitrogen atoms directly attached to acyclic carbon atoms [5]
295
/
033
•
•
•
with the ring nitrogen atoms directly attached to carbocyclic rings [5]
295
/
037
•
•
with quaternary ring nitrogen atoms [5]
295
/
04
•
with substituted hydrocarbon radicals attached to ring nitrogen atoms [2]
295
/
06
•
•
substituted by halogen atoms or nitro radicals [2]
295
/
067
•
•
•
with the ring nitrogen atoms and the substituents attached to the same carbon chain, which is not interrupted by carbocyclic rings [5]
295
/
073
•
•
•
with the ring nitrogen atoms and the substituents separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings [5]
295
/
08
•
•
substituted by singly bound oxygen or sulfur atoms [2]
295
/
084
•
•
•
with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings [5]
295
/
088
•
•
•
•
to an acyclic saturated chain [5]
295
/
092
•
•
•
•
with aromatic radicals attached to the chain [5]
295
/
096
•
•
•
with the ring nitrogen atoms and the oxygen or sulfur atoms separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings [5]
295
/
10
•
•
substituted by doubly bound oxygen or sulfur atoms (acylated ring nitrogen atoms C 07 D 295/16) [2]
295
/
104
•
•
•
with the ring nitrogen atoms and the doubly bound oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings [5]
295
/
108
•
•
•
•
to an acyclic saturated chain [5]
295
/
112
•
•
•
with the ring nitrogen atoms and the doubly bound oxygen or sulfur atoms separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings [5]
295
/
116
•
•
•
•
with the doubly bound oxygen or sulfur atoms directly attached to a carbocyclic ring [5]
295
/
12
•
•
substituted by singly or doubly bound nitrogen atoms (nitro radicals C 07 D 295/06) [2]
295
/
125
•
•
•
with the ring nitrogen atoms and the substituent nitrogen atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings [5]
295
/
13
•
•
•
•
to an acyclic saturated chain [5]
295
/
135
•
•
•
with the ring nitrogen atoms and the substituent nitrogen atoms separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings [5]
295
/
14
•
•
substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals [2]
295
/
145
•
•
•
with the ring nitrogen atoms and the carbon atoms with three bonds to hetero atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings [5]
295
/
15
•
•
•
•
to an acyclic saturated chain [5]
295
/
155
•
•
•
with the ring nitrogen atoms and the carbon atoms with three bonds to hetero atoms separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings [5]
295
/
16
•
acylated on ring nitrogen atoms [2]
295
/
18
•
•
by radicals derived from carboxylic acids, or sulfur or nitrogen analogues thereof [2]
295
/
182
•
•
•
Radicals derived from carboxylic acids [5]
295
/
185
•
•
•
•
from aliphatic carboxylic acids [5]
295
/
192
•
•
•
•
from aromatic carboxylic acids [5]
295
/
194
•
•
•
Radicals derived from thio- or thiono carboxylic acids [5]
295
/
195
•
•
•
Radicals derived from nitrogen analogues of carboxylic acids [5]
295
/
20
•
•
by radicals derived from carbonic acid, or sulfur or nitrogen analogues thereof [2]
295
/
205
•
•
•
Radicals derived from carbonic acid [5]
295
/
21
•
•
•
Radicals derived from sulfur analogues of carbonic acid [5]
295
/
215
•
•
•
Radicals derived from nitrogen analogues of carbonic acid [5]
295
/
22
•
with hetero atoms directly attached to ring nitrogen atoms [2]
295
/
24
•
•
Oxygen atoms [5]
295
/
26
•
•
Sulfur atoms [5]
295
/
28
•
•
Nitrogen atoms [5]
295
/
30
•
•
•
non-acylated [5]
295
/
32
•
•
•
acylated with carboxylic or carbonic acids, or their nitrogen or sulfur analogues [5]
Heterocyclic compounds having oxygen atoms, with or without sulfur, selenium, or tellurium atoms, as ring hetero atoms [2]
