A

• [+] Azocines (1 P)
• [+] Azoles (11 C, 1 P)

B

• [+] Benzodiazepines (100 P)
• [+] Benzothiazoles (8 P)
• [+] Beta-Carbolines (13 P)

F

• [+] Flavins (6 P)
• [+] Folates (10 P)

H

• [+] Hydantoins (14 P)

I

• [+] Imides (1 C, 30 P)
• [+] Indazoles (6 P)
• [+] Indoles (3 C, 69 P, 1 F)
• [+] Indolizines (2 P)
• [+] Isoxazoles (20 P)

L

• [+] Lactams (2 C, 20 P)
• [+] Lysergamides (2 C, 27 P, 3 F)

M

• [+] Morphinans (23 P)
• [+] Morpholines (43 P)

N

• [+] Nucleosides (38 P)

O

• [+] Opioids (9 C, 282 P, 1 F)

P

• [+] Phenothiazines (45 P)
• [+] Piperazines (124 P)
• [+] Piperidines (1 C, 128 P)
• [+] Purines (2 C, 28 P)
• [+] Pyrazines (1 C, 17 P)
• [+] Pyrazolones (12 P)
• [+] Pyridazines (9 P)

P cont.

• [+] Pyridines (122 P)
• [+] Pyrimidines (1 C, 64 P)
• [+] Pyrrolidines (1 C, 35 P)
• [+] Pyrrolidones (1 C, 21 P)
• [+] Pyrrolines (5 P)

Q

• [+] Quinolines (53 P)
• [+] Quinoxalines (2 P)
• [+] Quinuclidines (15 P)

T

• [+] Thiazolidinediones (6 P)
• [+] Triazines (30 P)
• [+] Tropanes (1 C, 62 P)

X

• [+] Xanthines (32 P)

A

• Acibenzolar
• Acibenzolar-S-methyl
• Acridine yellow
• Acridone
• Actinidine
• Adamsite
• Anatoxin-a
• Arecoline
• Azepane
• Azepine
• Azetidine
• Aziridine
• Azirine
• Azocane
• Azocine

B

• Basic aromatic ring
• Benzazepine
• Benzazepines
• Benzimidazole
• Benzimidazoline
• Benzisoxazole
• Benzo(c)cinnoline
• Benzodiazepine
• Benzothiazine
• Benzotriazole
• Benzoxazole
• Bromobimane

C

• CGP 52608
• CR gas
• Carbazole
• Chlorin
• Citrazinic acid
• Coniine
• Coproporphyrinogens
• Cylindrospermopsin

D

• 1,5-Diazabicyclo(4.3.0)non-5-ene
• Diazepine
• 1,2-Diazepine
• 1,4-Diazepine
• 1,3-Diazepine
• Diazirine
• Diazole
• Dichloroisocyanuric acid
• 4,5-Dihydroorotic acid

D cont.

• Dihydrothymine
• Dihydrouracil
• Diketopiperazine
• Diquat

E

• Ethoxyquin

F

• Fenadiazole
• Furazan

G

• G2ZT
• Gaboxadol
• Goitrin

H

• Harmaline
• Heptazine
• Herapathite
• Hexachlorophosphazene
• Hexamine
• Hexazinone
• Hydroxybenzotriazole
• 5-Hydroxyisourate

I

• Imidazol-4-one-5-propionic acid
• Iminostilbene
• Indazole
• Indigo dye
• Indole
• Indoline
• Isatin
• Isoindole
• Isoquinoline
• Isoxazole

L

• Lactam
• Luminol

M

• Methazole

N

• Neopterin
• Nicotine

O

• N-Octyl bicycloheptene dicarboximide
• Orange B
• Oxazolidine
• 2-Oxazolidone
• 8-Oxoguanine

P

• Pentazole
• Phenanthridine
• Phenanthroline
• Pifithrin
• Piperidinedione
• Piperidione

P cont.

• Porphyrin
• Pteridine
• Pterin
• Purine
• Pyocyanine
• Pyrazole
• Pyrazolidine
• Pyridazine
• Pyridinium
• 2-Pyridone
• Pyrimidine
• Pyrimidone
• Pyrrole
• Pyrroline
• Pyrroloquinoline quinone

Q

• Quinazoline
• Quinoline
• Quinoxaline
• Quisqualic acid

S

• Saxitoxin
• Sepiapterin
• Setiptiline
• Sodium dichloroisocyanurate

T

• TEMPO
• Terpyridine
• Tetramethylenedisulfotetramine
• Tetraphenylporphyrin
• Tetrazine
• Thiazepine
• 1,3-Thiazepine
• 1,4-Thiazepine
• Thiazine
• Thiazole
• Thiazolidine
• Thiazoline
• Thienobenzodiazepine
• Triazine
• Tribromoisocyanuric acid
• Trichloroisocyanuric acid
• Tröger's base

U

• Uric acid

V

• N-Vinylcarbazole
• Viologen

X

• Xanthopterin