| Hupehenisine | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Steroidal alkaloids | Details |
| Huperzine C | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Quinolones and derivatives | Details |
| Huperzine G | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Sesquiterpenoids | Details |
| Huperzine I | Organic compounds | Organoheterocyclic compounds | Azaspirodecane derivatives | Not Available | Details |
| Huperzine K | Organic compounds | Organoheterocyclic compounds | Quinolidines | Not Available | Details |
| Huperzine L | Organic compounds | Organoheterocyclic compounds | Quinolidines | Not Available | Details |
| Ipecosidic acid | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Terpene glycosides | Details |
| Isopyoverdin | Not Available | Not Available | Not Available | Not Available | Details |
| Isoroquefortine C | Organic compounds | Organoheterocyclic compounds | Indoles and derivatives | Pyrroloindoles | Details |
| Isorubijervosine | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Steroidal glycosides | Details |
| Iso-shinonomenine | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Steroidal alkaloids | Details |
| Isoverticine beta-N-oxide | Not Available | Not Available | Not Available | Not Available | Details |
| Jervinone | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Steroidal alkaloids | Details |
| (-)-Kapakahine B | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| 1,14-Bis(dihydrocaffeoyl)spermine | Organic compounds | Benzenoids | Phenols | Benzenediols | Details |
| Lanceomigine | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Benzoquinolines | Details |
| Lanyuamide III | Organic compounds | Organic acids and derivatives | Carboximidic acids and derivatives | Carboximidic acids | Details |
| Leucostine B | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Diterpenoids | Details |
| Lissoclinamide 10 | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Louludinium | Organic compounds | Organoheterocyclic compounds | Pyridines and derivatives | Methylpyridines | Details |
| Ludaconitine | Not Available | Not Available | Not Available | Not Available | Details |
| Lycogalic acid dimethyl ester C | Organic compounds | Organoheterocyclic compounds | Indoles and derivatives | Hydroxyindoles | Details |
| Lycoposerramine H | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Sesquiterpenoids | Details |
| Madangamine B | Organic compounds | Organoheterocyclic compounds | Diazanaphthalenes | Naphthyridines | Details |
| Magnolamide | Organic compounds | Phenylpropanoids and polyketides | Cinnamic acids and derivatives | Hydroxycinnamic acids and derivatives | Details |
| Makaluvamine D | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Pyrroloquinolines | Details |
| Makaluvamine J | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Pyrroloquinolines | Details |
| Makaluvamine L | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Pyrroloquinolines | Details |
| Makaluvic acid B | Organic compounds | Organoheterocyclic compounds | Pyrrolopyridines | Not Available | Details |
| Malasseziazole B | Organic compounds | Organoheterocyclic compounds | Indoles and derivatives | Carbazoles | Details |
