| Label | Id | |
|---|---|---|
| 5'nucleotidase | E210007 | |
| 5,10-methylenetetrahydrofolate | E187235 | |
| 5,10-methylenetetrahydrofolate dehydrogenase | E187301 | |
| 5,10-methylenetetrahydrofolate reductase | E187236 | |
| 5,6,7,8-tetrahydrobiopterin | E187748 | |
| 5,6-dihydroxytryptamine | E189370 | |
| 5,7-DHT | E159528 | |
| 5,7-dihydroxytryptamine | E159527 | |
| 5,8,11,14-eicosatetraynoic | E221187 | |
| 5,8,11,14-eicosatetraynoic acid | E185265 | |
| 5-ASA | E201762 | |
| 5-FU | E158025 | |
| 5-FUdR | E197842 | |
| 5-HETE | E208983 | |
| 5-HIAA | E158027 |