Homologous series
from methanal to eicosanal
| Index | Name | Value |
| 1 | methanal | -92 |
| 2 | ethanal | -128 |
| 3 | propanal | -81 |
| 4 | butanal | -99 |
| 5 | pentanal | -92 |
| 6 | hexanal | -56 |
| 7 | heptanal | -43 |
| 8 | octanal | 13 |
| 9 | nonanal | -18 |
| 10 | decanal | -5 |
| 11 | undecanal | -4 |
| 12 | dodecanal | 44.5 |
| 13 | tridecanal | 15 |
| 14 | tetradecanal | 52.5 |
| 15 | pentadecanal | 24.5 |
| 16 | hexadecanal | 58.5 |
| 17 | heptadecanal | 36 |
| 18 | octadecanal | 63.5 |
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