| UDP-3-O-(3-Hydroxytetradecanoyl)-D-glucosamine | Organic compounds | Nucleosides, nucleotides, and analogues | Pyrimidine nucleotides | Pyrimidine nucleotide sugars | Details |
| UDP-4-Keto-pyranose | Organic compounds | Nucleosides, nucleotides, and analogues | Pyrimidine nucleotides | Pyrimidine ribonucleotides | Details |
| UDP-N-Acetyl-D-mannosaminouronate | Organic compounds | Nucleosides, nucleotides, and analogues | Pyrimidine nucleotides | Pyrimidine nucleotide sugars | Details |
| Ubiquinone-8 | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Quinone and hydroquinone lipids | Details |
| Undecaprenyl-diphospho N-acetylglucosamine-N-acetylmannosaminuronate-N-acetamido-4,6-dideoxy-D-galactose | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Polyprenols | Details |
| Undecaprenyl-diphospho-N-acetylglucosamine-N-acetylmannosaminuronate | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Polyprenols | Details |
| Ureidoacrylate peracid | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Peroxycarboxylic acids and derivatives | Details |
| Acyl phosphatidylglycerol (N-C14:1) | Organic compounds | Lipids and lipid-like molecules | Glycerophospholipids | Semilysobisphosphatidic acids | Details |
| Acyl phosphatidylglycerol (N-C16:1) | Organic compounds | Lipids and lipid-like molecules | Glycerophospholipids | Semilysobisphosphatidic acids | Details |
| Acyl phosphatidylglycerol (N-C18:1) | Organic compounds | Lipids and lipid-like molecules | Glycerophospholipids | Semilysobisphosphatidic acids | Details |
| Adenylated molybdopterin | Organic compounds | Nucleosides, nucleotides, and analogues | Molybdopterin dinucleotides | Not Available | Details |
| Arsenite | Inorganic compounds | Mixed metal/non-metal compounds | Miscellaneous mixed metal/non-metals | Miscellaneous metallic oxoanionic compounds | Details |
| Bis-molybdopterin guanine dinucleotide | Organic compounds | Nucleosides, nucleotides, and analogues | Purine nucleotides | Purine ribonucleotides | Details |
| Butanesulfonate | Organic compounds | Organic acids and derivatives | Sulfonic acids and derivatives | Sulfonic acids | Details |
| Cis-3-(3-carboxyethyl)-3,5-cyclohexadiene-1,2-diol | Organic compounds | Organooxygen compounds | Alcohols and polyols | Cyclic alcohols and derivatives | Details |
| Crotonobetaine | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty acids and conjugates | Details |
| Cyclopropane phosphatidylethanolamine (dihexadec-9,10-cyclo-anoyl, N-C16:0 cyclo) | Organic compounds | Organophosphorus compounds | Organic phosphoric acids and derivatives | Phosphate esters | Details |
| Cyclopropane phosphatidylethanolamine (dioctadec-11,12-cyclo-anoyl, N-C18:0 cyclo) | Organic compounds | Organophosphorus compounds | Organic phosphoric acids and derivatives | Phosphate esters | Details |
| Cyclopropane phosphatidylglycerol (dihexadec-9,10-cyclo-anoyl, N-C16:0 cyclo) | Organic compounds | Lipids and lipid-like molecules | Glycerophospholipids | Glycerophosphoglycerols | Details |
| Cyclopropane phosphatidylglycerol (dioctadec-11,12-cyclo-anoyl, N-C18:0 cyclo) | Organic compounds | Lipids and lipid-like molecules | Glycerophospholipids | Glycerophosphoglycerols | Details |
| dADP | Organic compounds | Nucleosides, nucleotides, and analogues | Purine nucleotides | Purine deoxyribonucleotides | Details |
| dTDP-4-Dehydro-6-deoxy-L-mannose | Organic compounds | Nucleosides, nucleotides, and analogues | Pyrimidine nucleotides | Pyrimidine nucleotide sugars | Details |
| Dehydroglycine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Carboxylic acid derivatives | Details |
| Ethanesulfonate | Organic compounds | Phenylpropanoids and polyketides | Depsides and depsidones | Not Available | Details |
| ferric 2,3-dihydroxybenzoylserine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| ferroxamine minus Fe(3) | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Carboxylic acid derivatives | Details |
| Ferroxamine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Carboxylic acid derivatives | Details |
| Galactofuranosyl-glucosyl-O-acetyl-rhamanosyl-N-acetylglucosamyl-undecaprenyl diphosphate | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Polyprenols | Details |
| gamma-Butyrobetaine | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty acids and conjugates | Details |
| gamma-Glutamyl-gamma-butyraldehyde | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |