| 1-Methylhistidine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| 1,3-Diaminopropane | Organic compounds | Organic nitrogen compounds | Organonitrogen compounds | Amines | Details |
| 2-Hydroxybutyric acid | Organic compounds | Organic acids and derivatives | Hydroxy acids and derivatives | Alpha hydroxy acids and derivatives | Details |
| Deoxyuridine | Organic compounds | Nucleosides, nucleotides, and analogues | Pyrimidine nucleosides | Pyrimidine 2'-deoxyribonucleosides | Details |
| Cortexolone | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Hydroxysteroids | Details |
| Alpha-ketoisovaleric acid | Organic compounds | Organic acids and derivatives | Keto acids and derivatives | Short-chain keto acids and derivatives | Details |
| p-Hydroxyphenylacetic acid | Organic compounds | Benzenoids | Phenols | 1-hydroxy-2-unsubstituted benzenoids | 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 |
| Carnosine | Organic compounds | Organic acids and derivatives | Peptidomimetics | Hybrid peptides | Details |
| Adenine | Organic compounds | Organoheterocyclic compounds | Imidazopyrimidines | Purines and purine derivatives | Details |
| Taurocholic acid | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Bile acids, alcohols and 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 |
| Betaine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | 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 | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | 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 |
| Androstenedione | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Androstane steroids | Details |
| Bilirubin | Organic compounds | Organoheterocyclic compounds | Tetrapyrroles and derivatives | Bilirubins | Details |
| Cellobiose | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | 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 |
| L-Carnitine | Organic compounds | Organic nitrogen compounds | Organonitrogen compounds | Quaternary ammonium salts | Details |
| Cortisol | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Hydroxysteroids | Details |
| Creatine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Cholesterol | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Cholestane steroids | Details |