| 1 | Acetyl residue |
| 2 | Acetal group |
| 3 | -c(o)ch3 |
| 4 | 1-oxoethanido |
| 5 | Ch3-co- |
| 6 | Acetyl |
| 7 | Ac |
| 8 | Ethanoyl |
| 9 | Aceto- |
| 10 | Acetaldehyde |
| 11 | Ethanal |
| 12 | Acetaldehydes |
| 13 | Acetic aldehyde |
| 14 | Ethyl aldehyde |
| 15 | Azetaldehyd |
| 16 | Acetaldehyd |
| 17 | Oxidized polyvinyl alcohol |
| 18 | An oxidized polyvinyl alcohol |