1. n-butanol (1-butanol)
```
H H H H
| | | |
H - C - C - C - C - O - H
| | | |
H H H H
```
2. sec-Butanol (2-butanol)
```
H H H
| | |
H - C - C - C - O - H
| | |
H H CH3
```
3. Isobutanol (2-methyl-1-propanol)
```
H H
| |
H - C - C - C - O - H
| | |
H CH3 H
```
4. tert-butanol (2-methyl-2-propanol)
```
H
|
H - C - C - O - H
| |
H CH3
/ \
CH3 CH3
```
Disse strukturelle formler viser arrangementet af atomer inden for hvert molekyle. Du kan se forskellene i positionen af hydroxylgruppen (OH) og placeringen af methylgrupperne (CH3).
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