| 1 | L-prolin |
| 2 | (s)-2-carboxypyrrolidine |
| 3 | (s)-2-pyrrolidinecarboxylic acid |
| 4 | Prolina |
| 5 | (2s)-pyrrolidine-2-carboxylic acid |
| 6 | (-)-proline |
| 7 | (s)-pyrrolidine-2-carboxylic acid |
| 8 | (-)-2-pyrrolidinecarboxylic acid |
| 9 | L-alpha-pyrrolidinecarboxylic acid |
| 10 | L-(-)-proline |
| 11 | L-pyrrolidine-2-carboxylic acid |
| 12 | Prolinum |
| 13 | (-)-(s)-proline |
| 14 | P |
| 15 | 2-pyrrolidinecarboxylic acid |
| 16 | Proline |
| 17 | (2s)-pyrrolidinium-2-carboxylate |