| 3-Pyridinebutanoic acid | Organic compounds | Organoheterocyclic compounds | Pyridines and derivatives | Not Available | Details |
| Biliverdin | Organic compounds | Organoheterocyclic compounds | Tetrapyrroles and derivatives | Bilirubins | Details |
| N-Methylnicotinium | Organic compounds | Organoheterocyclic compounds | Pyridines and derivatives | Pyrrolidinylpyridines | Details |
| Nicotine imine | Organic compounds | Alkaloids and derivatives | Not Available | Not Available | Details |
| Methacrylyl-CoA | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty acyl thioesters | Details |
| Cotinineglucuronide | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| 4-Imidazolone-5-propionic acid | Organic compounds | Organoheterocyclic compounds | Azoles | Imidazoles | Details |
| N-Formyl-L-methionine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| D-4'-Phosphopantothenate | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| UDP-D-Xylose | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| N,N-Dimethylaniline | Organic compounds | Organic nitrogen compounds | Organonitrogen compounds | Amines | Details |
| Malyl-CoA | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty acyl thioesters | Details |
| Succinyl-CoA | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty acyl thioesters | Details |
| 4,4-Dimethylcholesta-8,14,24-trienol | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Cholestane steroids | Details |
| Phosphohydroxypyruvic acid | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbonyl compounds | Details |
| 25-Azacholesterol | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Azasteroids and derivatives | Details |
| 3'-Ketolactose | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| Deoxyribose 5-phosphate | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| DHEA sulfate | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Sulfated steroids | Details |
| Hydrogen sulfite | Inorganic compounds | Homogeneous non-metal compounds | Non-metal oxoanionic compounds | Non-metal sulfites | Details |
| Angiotensin II | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Angiotensin III | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Angiotensin IV | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Hydroxide | Inorganic compounds | Homogeneous non-metal compounds | Non-metal oxoanionic compounds | Non-metal hydroxides | Details |
| 2-Methylbutyryl-CoA | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty acyl thioesters | Details |
| Arachidonic acid | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty acids and conjugates | Details |
| 2'-Deoxyguanosine 5'-monophosphate | Organic compounds | Nucleosides, nucleotides, and analogues | Purine nucleotides | Purine deoxyribonucleotides | Details |
| Enkephalin L | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Cotinine | Organic compounds | Organoheterocyclic compounds | Pyridines and derivatives | Pyrrolidinylpyridines | Details |
| D-Fructose 2,6-bisphosphate | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |