Targeted Analysis of Polar Metabolites
Description
A high sample throughput assay for identification and quantification of a wide range of polar metabolites ideal for large-scale studies, ionic metabolites, and low volume samples (<5 uL or < 5 mg dried weight).
Quantitative
Absolute
Platform Available
UPLC-MRM/MS
Price
Academic/Government: $120
Industry: $200
Minimum Volume
- Plasma/Serum: 50 uL
- Cord blood: 50uL
- DBS: 3.4 mm diameter punch
- Urine: 10 uL
- Sweat: 10 uL
- Saliva: 10uL
- Tissue (muslce, placenta, adipose): 5 mg dried mass
- Cell cultures: 5 mg dried mass
- Stool/Cecum: 5 mg dried mass
Order
| Name | HMDB ID | Super Class | Class |
|---|---|---|---|
| (Iso)butyrylcarnitine (C4) | |||
| 3-Aminoisobutyric acid (BAIBA) | |||
| 3-Hydroxyanthranilic acid | |||
| 4-Aminohippuric acid | |||
| 5-Hydroxyindole acetic acid | |||
| Acetyl-arginine | |||
| Acetylcarnitine (C2) | |||
| Argininosuccinate | |||
| Arginosuccinate | |||
| Asparic acid | |||
| Asymmetric dimethylarginine (SDMA) | |||
| Carboxy-ibuprofen | |||
| Carnitine (C0) | |||
| Cystine (disulfide) | |||
| Cystine disulfide | |||
| Decanoylcarnitine (C10) | |||
| Dimethyl guanosine | |||
| Dimethylglycine (DMG) | |||
| Ethyl sulfate | |||
| Ethylmalonic acid/Glutaric acid | |||
| Fructose-1,6-bisphosphate (F1,6P) | |||
| Fructose-6-phosphate (F6P) | |||
| gamma-Aminobutyic acid (GABA) | |||
| Glc-Hydroxylysine | |||
| GlcGal-Hydroxylysine | |||
| Glucose-1-phosphate (G1P) | |||
| Glucuronic acid | |||
| Glycerol phosphate | |||
| Glytamyl-cysteine | |||
| GSSG | |||
| Guanidoacetic acid | |||
| Hexanoylcarnitine (C6) | |||
| Hydroxyphenylacetylglycine | |||
| Hydroxyproline | |||
| Hydroxyproline (HyPro) | |||
| Imidazole propionate | |||
| Indole-3-lactic acid | |||
| Ketodeoxycholic acid | |||
| L-Beta-Aspartyl-L-glycine | |||
| Methylguanine | |||
| Methyluric acid | |||
| Monomethylarginine | |||
| N-Acetylaspartic acid | |||
| o/p/3-Hydroxyphenylacetic acid | |||
| Octanoylcarnitine (C8) | |||
| Phenyl alanine | |||
| Phenylacetyl glutamine | |||
| Phenylglyoxylic acid | |||
| Pilocarpic acid | |||
| Propionylcarnitine (C3) | |||
| Pyridoxic acid | |||
| Pyrocatechol sulfate | |||
| Pyroglutamic acid | |||
| Pyroglutamic acid (oxo-proline) | |||
| Symmetric dimethylarginine (ADMA) | |||
| Trigonelline | |||
| N'-Nitrosoanabasine | Alkaloids and derivatives | Alkaloids and derivatives | |
| Pilocarpine | Alkaloids and derivatives | Alkaloids and derivatives | |
| 3-Methoxytyramine | Benzenoids | Benzenoids | |
| Benzoic acid | HMDB01870 | Benzenoids | Benzene and substituted derivatives |
| Dihydroxybenzoic acid | Benzenoids | Benzenoids | |
| Gentisuric acid | Benzenoids | Benzenoids | |
| Hippuric acid | HMDB0062583 | Benzenoids | Benzene and substituted derivatives |
| Homogentisic acid | HMDB0000130 | Benzenoids | Benzene and substituted derivatives |
| Methylparaben | Benzenoids | Benzenoids | |
| Phenylacetic acid | Benzenoids | Benzenoids | |
| Propylparaben | Benzenoids | Benzenoids | |
| Salicyluric acid | HMDB00840 | Benzenoids | Benzene and substituted derivatives |
| Syringic acid | Benzenoids | Benzene and substituted derivatives | |
| Vanillic acid | HMDB00484 | Benzenoids | Benzene and substituted derivatives |
| Vanillylmandelic acid | HMDB00291 | Benzenoids | Phenols |
| Phosphate | Homogeneous non-metal compounds | Homogeneous non-metal compounds | |
| Phosphoric acid | Homogeneous non-metal compounds | Homogeneous non-metal compounds | |
| 2-Ethylsuberic acid | HMDB0059708 | Lipids and lipid-like molecules | Fatty Acyls |
| 2-Hydroxyvaleric acid | HMDB0001970 | Lipids and lipid-like molecules | Fatty Acyls |
| 2-Isopropylmalic acid | Lipids and lipid-like molecules | Lipids and lipid-like molecules | |
| 2-Methylglutaric acid | Lipids and lipid-like molecules | Lipids and lipid-like molecules | |
| 3-Hydroxymethylglutaric acid | HMDB0059737 | Lipids and lipid-like molecules | Fatty Acyls |
| 3-Methylglutaconic acid | HMDB0000522 | Lipids and lipid-like molecules | Fatty Acyls |
| Acetylcarnitine | HMDB0000201 | Lipids and lipid-like molecules | Fatty Acyls |
| Azelaic acid | HMDB00784 | Lipids and lipid-like molecules | Fatty Acyls |
| Butyric acid | Lipids and lipid-like molecules | Fatty Acyls | |
| Butyryl-L-carnitine | Lipids and lipid-like molecules | Lipids and lipid-like molecules | |
| Capric acid | HMDB0000513 | Lipids and lipid-like molecules | Fatty Acyls |
| Caprylic acid | HMDB0062511 | Lipids and lipid-like molecules | Fatty Acyls |
| Cholic acid | HMDB0000619 | Lipids and lipid-like molecules | Steroids and steroid derivatives |
| Citraconic acid | Lipids and lipid-like molecules | Lipids and lipid-like molecules | |
| Citramalic acid | HMDB0176421 | Lipids and lipid-like molecules | Fatty Acyls |
| Deoxycarnitine | Lipids and lipid-like molecules | Lipids and lipid-like molecules | |
| Deoxycholic acid | HMDB0000626 | Lipids and lipid-like molecules | Steroids and steroid derivatives |
| Glycerophosphorylcholine | Lipids and lipid-like molecules | Lipids and lipid-like molecules | |
| Isovaleric acid | Lipids and lipid-like molecules | Fatty Acyls | |
| Lauric acid | HMDB0000638 | Lipids and lipid-like molecules | Fatty Acyls |
| Malonyl-L-carnitine | Lipids and lipid-like molecules | Lipids and lipid-like molecules | |
| Methylsuccinic acid | HMDB0029127 | Lipids and lipid-like molecules | Fatty Acyls |
| Pimelic acid | Lipids and lipid-like molecules | Fatty Acyls | |
| Propionyl-L-carnitine | Lipids and lipid-like molecules | Lipids and lipid-like molecules | |
| Suberic acid | HMDB00893 | Lipids and lipid-like molecules | Fatty Acyls |
| Taurocholic Acid | HMDB0000036 | Lipids and lipid-like molecules | Steroids and steroid derivatives |
| Taurodeoxycholic Acid | HMDB0000896 | Lipids and lipid-like molecules | Steroids and steroid derivatives |
| Tiglyl-L-carnitine | Lipids and lipid-like molecules | Lipids and lipid-like molecules | |
| 1-Methylguanosine | Nucleosides, nucleotides, and analogues | Nucleosides, nucleotides, and analogues | |
| ADP | HMDB01341 | Nucleosides, nucleotides, and analogues | Purine nucleotides |
| AMP | HMDB00045 | Nucleosides, nucleotides, and analogues | Purine nucleotides |
| ATP | HMDB00538 | Nucleosides, nucleotides, and analogues | Purine nucleotides |
| cAMP | Nucleosides, nucleotides, and analogues | Purine nucleotides | |
| GTP | HMDB01273 | Nucleosides, nucleotides, and analogues | Purine nucleotides |
| IMP | HMDB00175 | Nucleosides, nucleotides, and analogues | Purine nucleotides |
| Methylcytidine | Nucleosides, nucleotides, and analogues | Nucleosides, nucleotides, and analogues | |
| NAD+ | Nucleosides, nucleotides, and analogues | Nucleosides, nucleotides, and analogues | |
| NADP+ | Nucleosides, nucleotides, and analogues | Nucleosides, nucleotides, and analogues | |
| Pseudouridine | Nucleosides, nucleotides, and analogues | Nucleosides, nucleotides, and analogues | |
| UTP | Nucleosides, nucleotides, and analogues | Pyrimidine nucleotides | |
| 2-Aminooctanoic acid | HMDB0000991 | Organic acids and derivatives | Carboxylic acids and derivatives |
| 2-Furoylglycine | HMDB00439 | Organic acids and derivatives | Carboxylic acids and derivatives |
| 2-Hydroxy-5-oxoproline | Organic acids and derivatives | Organic acids and derivatives | |
| 2-Hydroxybutyric acid | HMDB0030097 | Organic acids and derivatives | Hydroxy acids and derivatives |
| 2-Methylbutyrylglycine | HMDB0000339 | Organic acids and derivatives | Carboxylic acids and derivatives |
| 3-Hydroxybutyric acid | HMDB0000766 | Organic acids and derivatives | Hydroxy acids and derivatives |
| 3-Methyl-2-oxovaleric acid | HMDB0000491 | Organic acids and derivatives | Keto acids and derivatives |
| 3-Methylhistidine | HMDB0155761 | Organic acids and derivatives | Carboxylic acids and derivatives |
| 4-Guanidinobutanoic acid | Organic acids and derivatives | Organic acids and derivatives | |
| 5-Aminolevulinic acid | HMDB0001149 | Organic acids and derivatives | Carboxylic acids and derivatives |
| 5-Aminopentanoic acid | HMDB0003355 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Acesulfame K | Organic acids and derivatives | Organic acids and derivatives | |
| Acetaminophen sulfate | Organic acids and derivatives | Organic sulfuric acids and derivatives | |
| Acetate | HMDB00042 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Acetoacetic acid | HMDB0000060 | Organic acids and derivatives | Keto acids and derivatives |
| Acetylcarnosine | HMDB0012881 | Organic acids and derivatives | Peptidomimetics |
| Alanine | HMDB0061370 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Alpha-aminoadipic acid | Organic acids and derivatives | Organic acids and derivatives | |
| Alpha-ketoisovaleric acid | Organic acids and derivatives | Organic acids and derivatives | |
| Aminoadipic acid | HMDB0062113 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Arginine | HMDB0003416 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Asparagine | HMDB0000168 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Aspartic acid | HMDB00191 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Betaine | HMDB0000043 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Carnosine | HMDB00033 | Organic acids and derivatives | Peptidomimetics |
| Cis-Aconitic acid | Organic acids and derivatives | Organic acids and derivatives | |
| Citric acid | HMDB0000094 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Citrulline | HMDB0000904 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Creatine | HMDB0000064 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Creatinine | HMDB0000562 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Cystathionine | HMDB00099 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Cysteine | HMDB00574 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Cysteineglutathione disulfide | Organic acids and derivatives | Organic acids and derivatives | |
| Cysteinylglycine | Organic acids and derivatives | Organic acids and derivatives | |
| Cysteinylglycine disulfide | HMDB0000709 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Cystine | HMDB0000192 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Fumaric acid | HMDB00134 | Organic acids and derivatives | Carboxylic acids and derivatives |
| GABA | Organic acids and derivatives | Organic acids and derivatives | |
| Glutaconic acid | Organic acids and derivatives | Organic acids and derivatives | |
| Glutamate | HMDB0060475 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Glutamic acid | HMDB0000148 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Glutamine | HMDB0133927 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Glutaric acid | HMDB0034365 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Glycine | HMDB0000123 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Glycolic acid | HMDB0000115 | Organic acids and derivatives | Hydroxy acids and derivatives |
| Glycylhistidine | Organic acids and derivatives | Organic acids and derivatives | |
| Glycylproline | HMDB0000721 | Organic acids and derivatives | Carboxylic acids and derivatives |
| GSH | Organic acids and derivatives | Organic acids and derivatives | |
| Guanidinosuccinic acid | HMDB0003157 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Hexanoylglycine | HMDB00701 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Histidine | HMDB0154888 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Homoarginine | Organic acids and derivatives | Carboxylic acids and derivatives | |
| Homocitrulline | HMDB00679 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Hydroxyethyl glycine | HMDB0061148 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Hydroxylysine | Organic acids and derivatives | Organic acids and derivatives | |
| Hypotaurine | Organic acids and derivatives | Sulfinic acids and derivatives | |
| Iminodiacetic acid | Organic acids and derivatives | Organic acids and derivatives | |
| Indoleacetyl glutamine | Organic acids and derivatives | Carboxylic acids and derivatives | |
| Indolylacryloylglycine | Organic acids and derivatives | Organic acids and derivatives | |
| indoxyl sulfate | HMDB0186746 | Organic acids and derivatives | Organic sulfuric acids and derivatives |
| Isoleucine | HMDB0000172 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Lactic acid | HMDB0041561 | Organic acids and derivatives | Hydroxy acids and derivatives |
| Lauryl sulfate | Organic acids and derivatives | Organic acids and derivatives | |
| Leucine | HMDB0000687 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Levulinic acid | HMDB0029696 | Organic acids and derivatives | Keto acids and derivatives |
| Lysine | HMDB0000182 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Malic acid | HMDB0167333 | Organic acids and derivatives | Hydroxy acids and derivatives |
| Methionine | HMDB0000696 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Methionine Sulfoxide | HMDB0002005 | Organic acids and derivatives | Carboxylic acids and derivatives |
| N-Acetylputrescine | Organic acids and derivatives | Carboximidic acids and derivatives | |
| N-Butyrylglycine | HMDB0000808 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Nicotinuric acid | Organic acids and derivatives | Organic acids and derivatives | |
| Ornithine | HMDB0062620 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Oxo-proline | Organic acids and derivatives | Organic acids and derivatives | |
| Oxoglutarate | HMDB00208 | Organic acids and derivatives | Keto acids and derivatives |
| Oxoglutaric acid | HMDB0000346 | Organic acids and derivatives | Keto acids and derivatives |
| p-Cresol sulfate | HMDB0133325 | Organic acids and derivatives | Organic sulfuric acids and derivatives |
| Phenyl sulfate | Organic acids and derivatives | Organic acids and derivatives | |
| Phenylacetylglutamine | HMDB0006344 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Phenylacetylglycine | HMDB0000821 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Phenylalanine | HMDB0159744 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Phenylpropionylglycine | Organic acids and derivatives | Organic acids and derivatives | |
| Phenylsulfate | Organic acids and derivatives | Organic sulfuric acids and derivatives | |
| Phosphocreatine | Organic acids and derivatives | Carboxylic acids and derivatives | |
| Pipecolate | HMDB00070 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Pipecolic acid | HMDB0062767 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Proline | HMDB0000162 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Proline betaine | HMDB0004827 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Prolylglycine | HMDB0011178 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Propenoyl-L-carnitine | Organic acids and derivatives | Organic acids and derivatives | |
| Propionate | HMDB00237 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Propionylglycine | HMDB0000783 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Pyridylacetylglycine | Organic acids and derivatives | Organic acids and derivatives | |
| Pyroglutamic acid | HMDB0000267 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Pyruvic acid | HMDB0141776 | Organic acids and derivatives | Keto acids and derivatives |
| Serine | HMDB0001264 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Succinic acid | HMDB0000254 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Succinylacetone | HMDB00635 | Organic acids and derivatives | Keto acids and derivatives |
| Taurine | HMDB0000251 | Organic acids and derivatives | Organic sulfonic acids and derivatives |
| Theanine | HMDB0062764 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Threonine | HMDB0000167 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Tiglylglycine | HMDB0002393 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Trimethyllysine | Organic acids and derivatives | Organic acids and derivatives | |
| Tryptophan betaine | Organic acids and derivatives | Organic acids and derivatives | |
| Tyrosine | HMDB0000158 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Urea | HMDB00294 | Organic acids and derivatives | Organic carbonic acids and derivatives |
| Valine | HMDB0000883 | Organic acids and derivatives | Carboxylic acids and derivatives |
| Valylvaline | Organic acids and derivatives | Organic acids and derivatives | |
| 1-Phenylethylamine | HMDB0002017 | Organic nitrogen compounds | Organonitrogen compounds |
| Acetylcholine | HMDB0000895 | Organic nitrogen compounds | Organonitrogen compounds |
| Cadaverine | HMDB02322 | Organic nitrogen compounds | Organonitrogen compounds |
| Carnitine | HMDB0062496 | Organic nitrogen compounds | Organonitrogen compounds |
| Choline | HMDB0000097 | Organic nitrogen compounds | Organonitrogen compounds |
| Phosphorylcholine | HMDB0001565 | Organic nitrogen compounds | Organonitrogen compounds |
| Putrescine | HMDB01414 | Organic nitrogen compounds | Organonitrogen compounds |
| Spermidine | Organic nitrogen compounds | Organonitrogen compounds | |
| Spermine | Organic nitrogen compounds | Organonitrogen compounds | |
| Trimethylamine N-oxide | HMDB0000925 | Organic nitrogen compounds | Organonitrogen compounds |
| 2,3-Dehydro-2-deoxy-N-acetylneuraminic acid | Organic oxygen compounds | Organic oxygen compounds | |
| Acetaminophen glucuronide | Organic oxygen compounds | Organooxygen compounds | |
| Acetylneuraminic acid | Organic oxygen compounds | Organic oxygen compounds | |
| CTP | Organic oxygen compounds | Organooxygen compounds | |
| Ethyl glucuronide | Organic oxygen compounds | Organooxygen compounds | |
| Glucaric acid | Organic oxygen compounds | Organooxygen compounds | |
| Gluconic acid | Organic oxygen compounds | Organooxygen compounds | |
| Glucose | HMDB0000516 | Organic oxygen compounds | Organooxygen compounds |
| Glucose-6-phosphate (G6P) | Organic oxygen compounds | Organooxygen compounds | |
| Glyceraldehyde 3-phosphate | Organic oxygen compounds | Organooxygen compounds | |
| Kynurenine | HMDB0000684 | Organic oxygen compounds | Organooxygen compounds |
| N-Acetyl-9-O-acetylneuraminic acid | Organic oxygen compounds | Organic oxygen compounds | |
| N-acetylneuraminic acid | HMDB0000230 | Organic oxygen compounds | Organooxygen compounds |
| N-Glycolylneuraminic acid | Organic oxygen compounds | Organic oxygen compounds | |
| p-Cresol glucuronide | Organic oxygen compounds | Organic oxygen compounds | |
| Pantothenic acid | HMDB0062717 | Organic oxygen compounds | Organooxygen compounds |
| Quinic acid | HMDB0172071 | Organic oxygen compounds | Organooxygen compounds |
| Tartaric acid | HMDB0000346 | Organic oxygen compounds | Organooxygen compounds |
| Threonic acid | HMDB0137260 | Organic oxygen compounds | Organooxygen compounds |
| 1-Methylnicotinamide | HMDB0000699 | Organoheterocyclic compounds | Pyridines and derivatives |
| 1-Methyluric acid | HMDB0001882 | Organoheterocyclic compounds | Imidazopyrimidines |
| 1,3-Dimethyluric acid | HMDB0030801 | Organoheterocyclic compounds | Imidazopyrimidines |
| 3-Methyladenine | Organoheterocyclic compounds | Organoheterocyclic compounds | |
| 5-Acetylamino-6-formylamino-3-methyluracil | Organoheterocyclic compounds | Organoheterocyclic compounds | |
| 7-Methylxanthine | HMDB0001991 | Organoheterocyclic compounds | Imidazopyrimidines |
| Adenine | HMDB00034 | Organoheterocyclic compounds | Imidazopyrimidines |
| Ascorbic acid | HMDB0000044 | Organoheterocyclic compounds | Dihydrofurans |
| Caffeine | HMDB0001847 | Organoheterocyclic compounds | Imidazopyrimidines |
| Dihydrothymine | Organoheterocyclic compounds | Organoheterocyclic compounds | |
| Guanine | Organoheterocyclic compounds | Imidazopyrimidines | |
| Hydroxycotinine | Organoheterocyclic compounds | Organoheterocyclic compounds | |
| Hypoxanthine | HMDB0000157 | Organoheterocyclic compounds | Imidazopyrimidines |
| Indole-3-acetamide | Organoheterocyclic compounds | Organoheterocyclic compounds | |
| Indole-3-carboxaldehyde | Organoheterocyclic compounds | Organoheterocyclic compounds | |
| Indoleacetic acid | HMDB0000197 | Organoheterocyclic compounds | Indoles and derivatives |
| Kynurenic Acid | HMDB00715 | Organoheterocyclic compounds | Quinolines and derivatives |
| Orotic acid | Organoheterocyclic compounds | Diazines | |
| Oxypurinol | HMDB0000786 | Organoheterocyclic compounds | Imidazopyrimidines |
| Quinolinic acid | HMDB00232 | Organoheterocyclic compounds | Pyridines and derivatives |
| Saccharin | Organoheterocyclic compounds | Organoheterocyclic compounds | |
| Thymine | HMDB0010337 | Organoheterocyclic compounds | Diazines |
| Trans-urocanate | Organoheterocyclic compounds | Organoheterocyclic compounds | |
| Trans-urocanic acid | Organoheterocyclic compounds | Organoheterocyclic compounds | |
| Tryptophan | HMDB0030396 | Organoheterocyclic compounds | Indoles and derivatives |
| Uracil | HMDB0000300 | Organoheterocyclic compounds | Diazines |
| Uric acid | HMDB0000289 | Organoheterocyclic compounds | Imidazopyrimidines |
| Urocanic acid | HMDB0062562 | Organoheterocyclic compounds | Azoles |
| Xanthine | HMDB0000292 | Organoheterocyclic compounds | Imidazopyrimidines |
| Cinnamic acid | Phenylpropanoids and polyketides | Phenylpropanoids and polyketides | |
| Ferulic acid | HMDB0000954 | Phenylpropanoids and polyketides | Cinnamic acids and derivatives |