| 2-Ketobutyric acid | Organic compounds | Organic acids and derivatives | Keto acids and derivatives | Short-chain keto acids and derivatives | Details |
| Deoxyuridine | Organic compounds | Nucleosides, nucleotides, and analogues | Pyrimidine nucleosides | Pyrimidine 2'-deoxyribonucleosides | Details |
| Deoxycytidine | Organic compounds | Nucleosides, nucleotides, and analogues | Pyrimidine nucleosides | Pyrimidine 2'-deoxyribonucleosides | Details |
| a-Ketoisovaleric acid | Organic compounds | Organic acids and derivatives | Keto acids and derivatives | Short-chain keto acids and derivatives | Details |
| 3-Hydroxyisobutyric acid | Organic compounds | Organic acids and derivatives | Hydroxy acids and derivatives | Beta hydroxy acids and derivatives | Details |
| Ureidopropionic acid | Organic compounds | Organic acids and derivatives | Organic carbonic acids and derivatives | Ureas | Details |
| Biotin | Organic compounds | Organoheterocyclic compounds | Biotin and derivatives | Not Available | Details |
| Adenine | Organic compounds | Organoheterocyclic compounds | Imidazopyrimidines | Purines and purine derivatives | Details |
| Butyric acid | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty acids and conjugates | Details |
| Acetic acid | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Carboxylic acids | Details |
| Ascorbic acid | Organic compounds | Organoheterocyclic compounds | Dihydrofurans | Furanones | Details |
| Adenosine monophosphate | Organic compounds | Nucleosides, nucleotides, and analogues | Purine nucleotides | Purine ribonucleotides | Details |
| Melibiose | Organic compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Glycosyl compounds | Details |
| Adenosine | Organic compounds | Nucleosides, nucleotides, and analogues | Purine nucleosides | Not Available | Details |
| Ammonia | Inorganic compounds | Homogeneous non-metal compounds | Homogeneous other non-metal compounds | Not Available | Details |
| Cellobiose | Organic compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Glycosyl compounds | Details |
| beta-Alanine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Cyclic AMP | Organic compounds | Nucleosides, nucleotides, and analogues | Purine nucleotides | Cyclic purine nucleotides | Details |
| Acetoacetic acid | Organic compounds | Organic acids and derivatives | Keto acids and derivatives | Short-chain keto acids and derivatives | Details |
| Adenosine 3',5'-diphosphate | Organic compounds | Nucleosides, nucleotides, and analogues | Purine nucleotides | Purine ribonucleotides | Details |
| Carnitine | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty acids and conjugates | Details |
| Deoxyinosine | Organic compounds | Nucleosides, nucleotides, and analogues | Purine nucleosides | Purine 3'-deoxyribonucleosides | Details |
| cis-Aconitic acid | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Tricarboxylic acids and derivatives | Details |
| Dopamine | Organic compounds | Benzenoids | Benzene and substituted derivatives | Phenols and derivatives | Details |
| Dihydrouracil | Organic compounds | Organoheterocyclic compounds | Diazines | Pyrimidines and pyrimidine derivatives | Details |
| Cysteinylglycine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Dihydrothymine | Organic compounds | Organoheterocyclic compounds | Diazines | Pyrimidines and pyrimidine derivatives | Details |
| Cytidine triphosphate | Organic compounds | Nucleosides, nucleotides, and analogues | Pyrimidine nucleotides | Pyrimidine ribonucleotides | Details |
| Deoxyguanosine | Organic compounds | Nucleosides, nucleotides, and analogues | Purine nucleosides | Purine 3'-deoxyribonucleosides | Details |
| Glycerophosphocholine | Organic compounds | Lipids and lipid-like molecules | Glycerophospholipids | Glycerophosphocholines | Details |