| Halicylindroside A2 | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| Halicylindroside A3 | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| Halicylindroside B6 | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| Hemibastadinol 3 | Organic compounds | Benzenoids | Phenols | Halophenols | Details |
| Herveline B | Organic compounds | Organoheterocyclic compounds | Isoquinolines and derivatives | Benzylisoquinolines | Details |
| (+)-Homochelidonine | Organic compounds | Alkaloids and derivatives | Benzophenanthridine alkaloids | Hexahydrobenzophenanthridine alkaloids | Details |
| Hupehemonoside | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Steroidal glycosides | Details |
| methyl (2z)-2-[(3r,6's,7's,8'ar)-6'-ethyl-2,4-dihydroxy-3',5',6',7',8',8'a-hexahydro-2'h-spiro[indole-3,1'-indolizin]-7'-yl]-3-methoxyprop-2-enoate | Organic compounds | Organoheterocyclic compounds | Indolizidines | Not Available | Details |
| Hupehenizine | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Steroidal alkaloids | Details |
| Huperserratinine | Organic compounds | Organoheterocyclic compounds | Azaspirodecane derivatives | Not Available | Details |
| Huperzine W | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbonyl compounds | Details |
| Hyrtiomanzamine | Organic compounds | Alkaloids and derivatives | Harmala alkaloids | Not Available | Details |
| Impericine | Organic compounds | Organoheterocyclic compounds | Piperidines | Not Available | Details |
| Isoalfileramine | Organic compounds | Organoheterocyclic compounds | Benzopyrans | 1-benzopyrans | Details |
| Isoprotostemonine | Organic compounds | Alkaloids and derivatives | Stemona alkaloids | Stemoamide-type alkaloids | Details |
| Kapakahine D | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Kreysigine | Organic compounds | Alkaloids and derivatives | Homoaporphines | Not Available | Details |
| Labuanine A | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Benzoquinolines | Details |
| Laevisine A | Not Available | Not Available | Not Available | Not Available | Details |
| Lanyuamide I | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbonyl compounds | Details |
| 6-({[2-({6-[(benzoyloxy)methyl]-3,4,5-trihydroxyoxan-2-yl}oxy)-5-hydroxyphenyl]methoxy}carbonyl)-5,6-dihydroxy-2-oxocyclohex-3-en-1-yl benzoate | Organic compounds | Benzenoids | Anthracenes | Not Available | Details |
| Leroyine | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Diterpenoids | Details |
| (1r,2s,5s,7s,8r,9s,10s,11r,18r)-10-(acetyloxy)-9,18-dihydroxy-12,12-dimethyl-6-methylidene-17-oxapentacyclo[7.6.2.1⁵,⁸.0¹,¹¹.0²,⁸]octadecan-7-yl acetate | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Diterpenoids | Details |
| Lissoclinamide 5 | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Lissoclinidine | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Benzoquinolines | Details |
| Litebamine | Organic compounds | Benzenoids | Phenanthrenes and derivatives | Phenanthrols | Details |
| Lochneram | Not Available | Not Available | Not Available | Not Available | Details |
| Lucidine A | Organic compounds | Organoheterocyclic compounds | Quinolidines | Not Available | Details |
| Chromopyrrolic acid | Organic compounds | Organoheterocyclic compounds | Indoles and derivatives | Indoles | Details |
| Lycolucine | Organic compounds | Organoheterocyclic compounds | Quinolidines | Not Available | Details |
