Compounds (2), (3), (36) and (46) from B-2.11 have been omitted since they are not used as base compounds in fusion names. Except for names of the type phenothiazine the names given in the list should not be used as models for the coinage of new names. Replacement (Rule B-4), Hantzsch-Widman (Rule B-1) and fusion (Rule B-3) names are preferred.
| Phenomercurin |  |
| Isoarsindole |  |
| Arsindole |  |
| Isoarsindoline |  |
| Arsindoline |  |
| Arsanthridine |  |
| Acridarsine |  |
| Arsanthrene |  |
| Isophosphindole |  |
| Phosphindole |  |
| Isophosphinoline |  |
| Phosphinoline |  |
| Phosphanthrene |  |
| Tellurophene |  |
| Selenophene |  |
| Selenanthrene |  |
| Thiophene (1) | |
| Thianthrene (4) | |
| Phenothiarsine |  |
| Furan (5) | |
| Pyran (6) | |
| Isobenzofuran (7) | |
| Chromene (8) | |
| Xanthene (9) | |
| Phenoxantimonin |  |
| Phenoxarsine |  |
| Phenoxaphosphine |  |
| Phenoxatellurin |  |
| Phenoxaselenin |  |
| Phenoxathiin (10) | |
| Pyrrole (11,12) | |
| Imidazole (13) | |
| Pyrazole (14) | |
| Isothiazole (43)* | |
| Isoxazole (45)* | |
| Pyridine (15) | |
| Pyrazine (16) | |
| Pyrimidine (17) | |
| Pyridazine (18) | |
| Pyrrolizine (1H-form shown) |
 |
| Indolizine (19) | |
| Isoindole (20) | |
| Indole (21,22) | |
| Indazole (23) | |
| Purine (24) | |
| Quinolizine (25) | |
| Isoquinoline (26) | |
| Quinoline (27) | |
| Phthalazine (28) | |
| Naphthyridine (29) | |
| Quinoxaline (30) | |
| Quinazoline (31) | |
| Cinnoline (32) | |
| Pteridine (33) | |
| Carbazole (34,35) | |
| Phenanthridine (37) | |
| Acridine (38) | |
| Perimidine (39) | |
| Phenanthroline (40) | |
| Phenazine (41) | |
| Phenomercazine |  |
| Phenarsazine (42) |  |
| Phenophosphazine |  |
| Phenotellurazine |  |
| Phenoselenazine |  |
| Phenothiazine (44) | |
| Phenoxazine (47) |
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