| Ritterazine V | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Eicosanoids | Details |
| Roefractine | Organic compounds | Organoheterocyclic compounds | Isoquinolines and derivatives | Benzylisoquinolines | Details |
| Roelactamine | Organic compounds | Benzenoids | Dibenzocycloheptenes | Not Available | Details |
| Rugosanine B | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Sanjoinenine | Not Available | Not Available | Not Available | Not Available | Details |
| Sanjoinine G2 | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Saracorine | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Azasteroids and derivatives | Details |
| (-)-Sarconidine | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Azasteroids and derivatives | Details |
| Sauvagnine | Organic compounds | Organoheterocyclic compounds | Isoquinolines and derivatives | Not Available | Details |
| Securamine A | Organic compounds | Organoheterocyclic compounds | Indoles and derivatives | Pyrroloindoles | Details |
| Segetalin B | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Senbusine A | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Diterpenoids | Details |
| Serratinidine | Organic compounds | Organoheterocyclic compounds | Azaspirodecane derivatives | Not Available | Details |
| Sevanine | Organic compounds | Organoheterocyclic compounds | Isoquinolines and derivatives | Not Available | Details |
| Shermilamine E | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Benzoquinolines | Details |
| (-)-Tortifoline | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Steroidal alkaloids | Details |
| (+)-Stemofoline | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| Stemotinine | Organic compounds | Alkaloids and derivatives | Stemona alkaloids | Tuberostemospironine-type alkaloids | Details |
| Strictosidine | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Terpene glycosides | Details |
| Styelsamine A | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Benzoquinolines | Details |
| Sutchuenenine | Organic compounds | Organoheterocyclic compounds | Isoquinolines and derivatives | Benzylisoquinolines | Details |
| (+)-Szovitsamine | Organic compounds | Alkaloids and derivatives | Homoaporphines | Not Available | Details |
| Taipaienine | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Steroidal alkaloids | Details |
| Tauroacidin A | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Carboxylic acid derivatives | Details |
| Tazettadiol | Organic compounds | Organoheterocyclic compounds | Benzodioxoles | Not Available | Details |
| Thalicthuberine | Organic compounds | Alkaloids and derivatives | 6,6a-secoaporphines | Not Available | Details |
| Thalidesine | Organic compounds | Lignans, neolignans and related compounds | Not Available | Not Available | Details |
| Thalifaramine | Organic compounds | Alkaloids and derivatives | Aporphines | Not Available | Details |
| Thalipine | Organic compounds | Alkaloids and derivatives | Aporphines | Not Available | Details |
| Thebaine N-oxide | Not Available | Not Available | Not Available | Not Available | Details |
