| Label | Id | |
|---|---|---|
| borane | 30149 | |
| boride(1-) | 30166 | |
| boride(3-) | 30167 | |
| borohydride | 30157 | |
| boron(1+) | 30165 | |
| boron(3+) | 30168 | |
| boronium | 30158 | |
| brivaracetam | 133013 | |
| carbonates | 23016 | |
| chloridoaluminium | 30131 | |
| chloridoaluminium(1+) | 30132 | |
| chlorine(1+) | 30120 | |
| chlorphthalim | 133019 | |
| chromide(1-) | 33010 | |
| ciclopirox | 453011 |