| (-)-Licamichauxiioic acid B | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbonyl compounds | Details |
| (+)-Macaflavanone F | Organic compounds | Phenylpropanoids and polyketides | Flavonoids | Flavans | Details |
| (-)-Maesasaponin II | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Terpene glycosides | Details |
| Maesasaponin V2 | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Terpene glycosides | Details |
| Magnolianone | Organic compounds | Benzenoids | Phenols | Methoxyphenols | Details |
| Makaluvamine E | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Pyrroloquinolines | Details |
| Mandarone A | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Diterpenoids | Details |
| 7-methyl-6,8-dioxo-3-(prop-1-en-1-yl)isochromen-7-yl 4-hydroxy-2-methoxy-6-methylbenzoate | Organic compounds | Organoheterocyclic compounds | Azaphilones | Not Available | Details |
| Medinillin B | Organic compounds | Phenylpropanoids and polyketides | Tannins | Hydrolyzable tannins | Details |
| methyl (2e)-5-[(1s,4ar,5r,8ar)-5-({[(3s)-5-[(1r,2r)-2-hydroxy-2,6,6-trimethylcyclohexyl]-3-methylpentanoyl]oxy}methyl)-5,8a-dimethyl-2-methylidene-hexahydro-1h-naphthalen-1-yl]-3-methylpent-2-enoate | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Diterpenoids | Details |
| (-)-Meliacarpinin B | Organic compounds | Organoheterocyclic compounds | Naphthofurans | Not Available | Details |
| Melinonine F | Not Available | Not Available | Not Available | Not Available | Details |
| Melitric acid A | Organic compounds | Benzenoids | Benzene and substituted derivatives | Phenylpyruvic acid derivatives | Details |
| Mesembryanthin | Organic compounds | Phenylpropanoids and polyketides | Flavonoids | Flavonoid glycosides | Details |
| Methyl homosecodaphniphyllate | Organic compounds | Alkaloids and derivatives | Daphniphylline-type alkaloids | Not Available | Details |
| Methyl melitrate A | Organic compounds | Benzenoids | Benzene and substituted derivatives | Phenylpyruvic acid derivatives | Details |
| (-)-Mirabamide C | Organic compounds | Organic acids and derivatives | Peptidomimetics | Depsipeptides | Details |
| N-Methyl-2-pyrrolidone | Organic compounds | Organoheterocyclic compounds | Pyrrolidines | N-alkylpyrrolidines | Details |
| (+)-Norpredicentrine | Organic compounds | Alkaloids and derivatives | Aporphines | Not Available | Details |
| (-)-Norsecurinine | Organic compounds | Organoheterocyclic compounds | Pyrrolizidines | Not Available | Details |
| Nuttingin C | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Diterpenoids | Details |
| Orisuaveoline A | Organic compounds | Organoheterocyclic compounds | Indoles and derivatives | Pyridoindoles | Details |
| Palauolol | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Terpene lactones | Details |
| Penasulfate A | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| (+)-Perennisoside V | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Terpene glycosides | Details |
| (+)-Perennisoside VII | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Terpene glycosides | Details |
| (-)-Pescaprein I | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| (-)-Pescaprein XVII | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| 7α,10α-dihydroxy-1β-methoxyeremophil-11(13)-en-12,8β-olide | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Terpene lactones | Details |
| 1-(5,6-dimethylhept-3-en-2-yl)-9a,11a-dimethyl-1h,2h,3h,3ah,4h,6h,7h,8h,9h,10h,11h-cyclopenta[a]phenanthrene-7,10-diol | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Ergostane steroids | Details |
