| L-Proline | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Iron(2+) | Inorganic compounds | Homogeneous metal compounds | Homogeneous transition metal compounds | Not Available | Details |
| cis-2-Methylaconitate | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Tricarboxylic acids and derivatives | Details |
| Thiamine pyrophosphate | Organic compounds | Organoheterocyclic compounds | Diazines | Pyrimidines and pyrimidine derivatives | Details |
| Carbonic acid | Organic compounds | Organic acids and derivatives | Organic carbonic acids and derivatives | Organic carbonic acids | Details |
| Gluconic acid | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| 2-Oxo-3-hydroxy-4-phosphobutanoic acid | Organic compounds | Organic acids and derivatives | Keto acids and derivatives | Short-chain keto acids and derivatives | Details |
| Formic acid | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Carboxylic acids | Details |
| D-Mannose 1-phosphate | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| L-Leucine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Ketoleucine | Organic compounds | Organic acids and derivatives | Keto acids and derivatives | Short-chain keto acids and derivatives | Details |
| CDP-Ethanolamine | Organic compounds | Nucleosides, nucleotides, and analogues | Pyrimidine nucleotides | Pyrimidine ribonucleotides | Details |
| 3-Dehydroshikimic acid | Organic compounds | Organooxygen compounds | Alcohols and polyols | Polyols | Details |
| Thiocyanate | Organic compounds | Organosulfur compounds | Thiocyanates | Not Available | Details |
| Pyridoxal | Organic compounds | Organoheterocyclic compounds | Pyridines and derivatives | Pyridine carboxaldehydes | Details |
| Phosphohydroxypyruvic acid | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbonyl compounds | Details |
| 2-Acetolactate | Organic compounds | Organic acids and derivatives | Keto acids and derivatives | Short-chain keto acids and derivatives | Details |
| Palmitaldehyde | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty aldehydes | Details |
| L-Dihydroorotic acid | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Pyridoxamine 5'-phosphate | Organic compounds | Organoheterocyclic compounds | Pyridines and derivatives | Pyridoxamines | Details |
| 2-(Formamido)-N1-(5-phospho-D-ribosyl)acetamidine | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| 4-Phosphopantothenoylcysteine | Organic compounds | Organic acids and derivatives | Peptidomimetics | Hybrid peptides | Details |
| Porphobilinogen | Organic compounds | Organic nitrogen compounds | Organonitrogen compounds | Amines | Details |
| Phosphoribosyl pyrophosphate | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbohydrates and carbohydrate conjugates | Details |
| 5-Diphosphomevalonic acid | Organic compounds | Organic oxygen compounds | Organic oxoanionic compounds | Organic pyrophosphates | Details |
| (2-trans,6-trans)-Farnesol | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Sesquiterpenoids | Details |
| Orotic acid | Organic compounds | Organoheterocyclic compounds | Diazines | Pyrimidines and pyrimidine derivatives | Details |
| Cytidine monophosphate | Organic compounds | Nucleosides, nucleotides, and analogues | Pyrimidine nucleotides | Pyrimidine ribonucleotides | Details |
| Pyridoxine 5'-phosphate | Organic compounds | Organoheterocyclic compounds | Pyridines and derivatives | Pyridoxines | Details |
| (R)-Acetoin | Chemical entities | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Details |