Chemical
group |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
| Methyl group |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
| Methylene group |
+ |
- |
- |
- |
- |
- |
- |
- |
- |
- |
+ |
- |
+ |
- |
+ |
+ |
- |
- |
+ |
+ |
| Aromatic group |
- |
- |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
- |
+ |
+ |
+ |
+ |
- |
- |
- |
Amide
Group |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
+ |
- |
+ |
+ |
- |
- |
+ |
- |
| Alcohol |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
| Ester |
+ |
+ |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
+ |
- |
- |
+ |
| Ketone |
+ |
- |
- |
- |
+ |
+ |
- |
+ |
+ |
- |
- |
- |
- |
+ |
- |
- |
- |
- |
- |
+ |
| Carboxylic acid |
+ |
- |
+ |
+ |
+ |
+ |
+ |
+ |
- |
+ |
- |
- |
- |
- |
- |
- |
- |
+ |
- |
- |
Cyclic group
Cyclic propane |
- |
+ |
- |
- |
- |
- |
- |
- |
+ |
- |
+ |
+ |
- |
+ |
+ |
+ |
+ |
- |
+ |
+ |
| C-N Linkage |
+ |
+ |
+ |
- |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
| Combination and Overtone |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
- |
- |
+ |
- |
+ |
|