| Label | Id | |
|---|---|---|
| 2,3-benzoquinoline | 36420 | |
| 2,3-biphenyldiol | 16205 | |
| 2,3-bisphospho-D-glycerate | 17720 | |
| 2,3-didehydroalaninate | 58020 | |
| 2,3-dihydro-5,7-dihydroxy-2-(4-hydroxyphenyl)-4-benzopyrone | 50201 | |
| 2,4,5-TCP | 28520 | |
| 2,3-dihydrofisetin | 5202 | |
| 2,3-disphospho-D-glycerate | 17720 | |
| 2,4,2',4'-Tetrachlorobiphenyl | 34204 | |
| 2,4,5,2',4',5'-Hexachlorobiphenyl | 34202 | |
| 2,4,5-trihydroxyphenylalanine | 20725 | |
| 2,4,6,2',4',6'-Hexachlorobiphenyl | 34203 | |
| 2,4,6-Trinitro-1,3-dimethyl-5-tert-butylbenzene | 77320 | |
| 2,4,6-Trinitro-3,5-dimethyl-1-tert-butylbenzene | 77320 | |
| 2,4,6-Trinitro-5-tert-butyl-m-xylene | 77320 |