Willow MetaboLib v.1.0: The Metabolite Willow Library
| Chemical Classification | Number of Metabolites |
| Alcohols | 36 |
| Aldehydes | 61 |
| Alkaloids | 60 |
| Amides | 25 |
| Amines | 41 |
| Amino Acids & Derivatives | 143 |
| Carbohydrates & Derivatives | 256 |
| Carboxylic Acids | 242 |
| CoA-derivatives | 109 |
| Fatty Acids | 103 |
| Flavonoids | 238 |
| Heterocyclic Compounds | 146 |
| Ketones | 28 |
| Lipids | 77 |
| Macrocyclic Compounds | 65 |
| Nucleic acids, Nucleotides & Nucleosides | 130 |
