MetStat: Summary table of metabolites most frequently reported in NMDR studies
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| Refmet Name | Studies | Super Class | Main Class | Sub Class |
|---|---|---|---|---|
| 8-Methoxykynurenic acid | 32 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| Apodine | 2 | Alkaloids | Tryptophan alkaloids | Aspidosperma type |
| 4-Hydroxyindole | 12 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 8-Hydroxycarvedilol | 1 | Alkaloids | Tryptophan alkaloids | Carbazole alkaloids |
| Alprazolam | 7 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| Apoatropine | 5 | Alkaloids | Ornithine alkaloids | Tropane alkaloids |
| 3-Hydroxy-2-methylpyridine-4,5-dicarboxylate | 13 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-(Hydroxyamino)quinoline N-oxide | 4 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| 5-Hydroxytryptophol | 57 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 7-Hydroxymitragynine | 5 | Alkaloids | Tryptophan alkaloids | Tryptamines |
| Agroclavine | 3 | Alkaloids | Alkaloids | Other alkaloids |
| Alpinine | 4 | Alkaloids | Alkaloids | Other alkaloids |
| Anabasine | 8 | Alkaloids | Alkaloids | Other alkaloids |
| Apixaban | 3 | Alkaloids | Tryptophan alkaloids | Strychnos alkaloids |
| 3,4-Dihydroxyphenylglycol | 68 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 3-(Dimethylaminomethyl)indole | 8 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 3-Methoxytyramine sulfate | 24 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 4-Deoxypyridoxine 5'-phosphate | 1 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-Pyridoxolactone | 20 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 5-Hydroxypyrazine-2-carboxylic acid | 1 | Alkaloids | Pyridine alkaloids | Pyridine alkaloids |
| 6-Hydroxydopamine | 27 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 7-Aminonitrazepam | 4 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| Actinidine | 5 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Agmatine | 156 | Alkaloids | Ornithine alkaloids | Polyamines |
| Allocryptopine | 4 | Alkaloids | Alkaloids | Other alkaloids |
| alpha-Narcotine | 3 | Alkaloids | Alkaloids | Other alkaloids |
| Amataine | 2 | Alkaloids | Tryptophan alkaloids | Aspidosperma type |
| Anabasamine | 10 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Angustifoline | 1 | Alkaloids | Lysine alkaloids | Quinolizidine alkaloids |
| Aphylline | 1 | Alkaloids | Alkaloids | Other alkaloids |
| 2-Propylpyridine | 2 | Alkaloids | Pyridine alkaloids | Pyridine alkaloids |
| 3,4-Dihydroxybenzylamine | 10 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 3-Acetylnerbowdine | 1 | Alkaloids | Tyrosine alkaloids | Amarylidaceae alkaloids |
| 3beta,6beta-Dihydroxynortropane | 1 | Alkaloids | Ornithine alkaloids | Tropane alkaloids |
| 3-Hydroxyquinine | 5 | Alkaloids | Tryptophan alkaloids | Cinchona alkaloids |
| 3-Methoxytyramine | 102 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 3-Pyridinecarboxaldehyde | 3 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-Aminopyridine | 19 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-Methoxytyramine | 2 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 4-Pyridoxic acid | 478 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 5-Aminoimidazole-4-carboxamide | 17 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 5-Hydroxyindolepyruvic acid | 7 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 5-Methoxytryptophol | 43 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 6-Formylindolo[3,2-B]carbazole | 6 | Alkaloids | Tryptophan alkaloids | Indolocarbazoles |
| 6-Hydroxypseudooxynicotine | 15 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 7-Aminoclonazepam | 6 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| Acetylagmatine | 15 | Alkaloids | Ornithine alkaloids | Polyamines |
| Acronycine | 3 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| Adlumine | 3 | Alkaloids | Alkaloids | Other alkaloids |
| Affinine | 1 | Alkaloids | Alkaloids | Other alkaloids |
| Ajmaline | 10 | Alkaloids | Alkaloids | Other alkaloids |
| Aknadicine | 2 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| alpha-Ergocryptine | 4 | Alkaloids | Tryptophan alkaloids | Ergot alkaloids |
| alpha-Hydroxytriazolam | 5 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| 2-Heptyl-4-quinolone | 1 | Alkaloids | Anthranilic acid alkaloids | Quinoline alkaloids |
| Amalorin | 4 | Alkaloids | Alkaloids | Other alkaloids |
| Aminopiperidinecarboxylic acid | 1 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
| Amurine | 2 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| Androcymbine | 2 | Alkaloids | Alkaloids | Other alkaloids |
| 2-Hydroxypyridine | 97 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Aniflorine | 3 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| Antirhine | 2 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| 1-Methyl nicotinamide | 330 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2-Methylindole | 4 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 2-Methyl-3-hydroxy-5-formylpyridine-4-carboxylate | 10 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2-Pyridyl hydroxymethane sulfonic acid | 5 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 1H-Indole-7-acetic acid | 9 | Alkaloids | Tryptophan alkaloids | Indoleacetic acids |
| 3,4-Dimethoxyphenylethylamine | 3 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 3-Amino-1,4-dimethyl-5H-pyrido[4,3-b]indole | 3 | Alkaloids | Tryptophan alkaloids | Carbazole alkaloids |
| 3-Amino-1-methyl-5H-pyrido[4,3-b]indole | 2 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| 3-Hydroxyisonicotinic acid | 2 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 3-Hydroxypyridine sulfate | 44 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 3-Indolebutyric acid | 32 | Alkaloids | Tryptophan alkaloids | 3-Alkylindoles |
| 3-Indolepropionic acid | 215 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 3-Methyleneoxindole | 55 | Alkaloids | Tryptophan alkaloids | Indolines |
| 3-Pyridinebutanoic acid | 5 | Alkaloids | Pyridine alkaloids | Pyridine alkaloids |
| 4,21-Dehydrogeissoschizine | 1 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| 4-Aminoantipyrine | 1 | Alkaloids | Anthranilic acid alkaloids | Quinoline alkaloids |
| 2-Methylpropyl 2-aminobenzoate | 1 | Alkaloids | Anthranilic acid alkaloids | Anthranilic acid alkaloids |
| 4-Imidazolone-5-propionic acid | 48 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanol | 9 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-Pyridone | 26 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 5,6-Dihydroxyindole | 1 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 5-Aminoimidazole | 4 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 5-Hydroxydopamine | 6 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 5-Hydroxyindoleacetic acid | 348 | Alkaloids | Tryptophan alkaloids | Indoleacetic acids |
| 5-Methoxyindoleacetic acid | 42 | Alkaloids | Tryptophan alkaloids | Indoleacetic acids |
| 5-Methoxytryptophan | 41 | Alkaloids | Tryptophan alkaloids | Tryptamines |
| 5-S-Cysteinyldopamine | 2 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 6beta-Hydroxynaltrexone | 4 | Alkaloids | Tyrosine alkaloids | Morphinan alkaloids |
| 6-Hydroxykynurenic acid | 34 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| 6-Hydroxynicotinic acid | 89 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Methoxyquinoline | 14 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| 7-Acetamidonitrazepam | 1 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| 8-Oxodeoxycoformycin | 10 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| Acepromazine | 3 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| Acetylisoniazid | 7 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Acremoauxin A | 3 | Alkaloids | Tryptophan alkaloids | Indoleacetic acids |
| Adiantifoline | 2 | Alkaloids | Tyrosine alkaloids | Aporphine alkaloids |
| Adifoline | 1 | Alkaloids | Alkaloids | Other alkaloids |
| Adrenochrome | 14 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| Afegostat | 19 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
| Ajmalicine | 2 | Alkaloids | Tryptophan alkaloids | Corynanthean-type alkaloids |
| 2-Cyanopyridine | 1 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2-Oxindole-3-acetate | 53 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 2(N)-Methyl-norsalsolinol | 3 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| 2-((Dimethylamino)methyl)phenol | 1 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| Alosetron | 6 | Alkaloids | Tryptophan alkaloids | N-alkylindoles |
| 2-Ethylisonicotinicacid | 2 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| alpha-Erythroidine | 2 | Alkaloids | Alkaloids | Other alkaloids |
| 1,2,3,4-Tetrahydro-beta-carboline-1,3-dicarboxylic acid | 5 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| 1,2,3,4-tetrahydroisoquinoline | 1 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| Altanserin | 3 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| Amabiline | 5 | Alkaloids | Alkaloids | Other alkaloids |
| Ambelline | 1 | Alkaloids | Tyrosine alkaloids | Amarylidaceae alkaloids |
| Aminoimidazolecarboxamide | 1 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| Aminopyridine | 1 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Amphetamine | 1 | Alkaloids | Pseudoalkaloids | Phenylalanine-derived alkaloids |
| Anapheline | 3 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
| Anatoxin A | 1 | Alkaloids | Alkaloids | Other alkaloids |
| 2-Hydroxynicotinic acid | 2 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2-Hydroxyphenethylamine | 82 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| Angustine | 5 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| Anhalamine | 4 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| Anisotropine methylbromide | 2 | Alkaloids | Ornithine alkaloids | Tropane alkaloids |
| Ankorine | 6 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| 10,11-Dihydroxycarbamazepine | 2 | Alkaloids | Anthranilic acid alkaloids | Quinoline alkaloids |
| 1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene acetaldehyde | 2 | Alkaloids | Tryptophan alkaloids | Other indoles |
| 19-Hydroxytabersonine | 1 | Alkaloids | Tryptophan alkaloids | Aspidosperma type |
| 2-Methylbenzothiazole | 1 | Alkaloids | Anthranilic acid alkaloids | Phenazine alkaloids |
| 1-(beta-D-Ribofuranosyl)-1,4-dihydronicotinamide | 18 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 1-Benzyl-1,2,3,4-tetrahydroisoquinoline | 3 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| 1-Carbazol-9-yl-3-(3,5-dimethyl-pyrazol-1-yl)-propan-2-ol | 3 | Alkaloids | Tryptophan alkaloids | Carbazole alkaloids |
| 1-Carboxymethylmetronidazole | 2 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 1H-Indole-3-acetamide | 91 | Alkaloids | Tryptophan alkaloids | Tryptamines |
| 1-Ethyl-2-pyrrolidinone | 1 | Alkaloids | Ornithine alkaloids | Pyrrolidine alkaloids |
| 1H-Indole-3-carboxaldehyde | 127 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 1-Methylhistamine | 152 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 1-Methyl-beta-carboline-3-carboxylic acid | 10 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| 3-Acetylpyridine | 1 | Alkaloids | Pyridine alkaloids | Pyridine alkaloids |
| 1-Methyl-5-imidazolelactate | 12 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 1-Methyl-5-imidazoleacetic acid | 45 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 3-Hydroxyindolin-2-one | 9 | Alkaloids | Tryptophan alkaloids | Indolines |
| 3-Hydroxyindolin-2-one sulfate | 8 | Alkaloids | Tryptophan alkaloids | Indolines |
| 3-Hydroxykynurenic acid | 3 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| 3-Hydroxypyridine | 40 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 3-Imidazol-1-yl-2-oxopropanoic acid | 1 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 3-Indoleacetonitrile | 28 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 3-Indoleglyoxylic acid | 29 | Alkaloids | Tryptophan alkaloids | Indoleacetic acids |
| 13-Hydroxylupanine | 2 | Alkaloids | Lysine alkaloids | Quinolizidine alkaloids |
| 10-Hydroxydihydrosanguinarine | 1 | Alkaloids | Tyrosine alkaloids | Benzophenanthridine alkaloids |
| 3-Methyldioxyindole | 43 | Alkaloids | Tryptophan alkaloids | Indolines |
| 3-Methylindole | 71 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 3-Methyloxindole | 42 | Alkaloids | Tryptophan alkaloids | Indolines |
| 3-Pyridylacetic acid | 29 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 3-Succinoylpyridine | 14 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4,6-Dihydroxyquinoline | 13 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| 4-Amino-1-piperidinecarboxylic acid | 8 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
| 2-Acetylpyrrolidine | 11 | Alkaloids | Ornithine alkaloids | Pyrrolidine alkaloids |
| 2,3-Dihydroxyindole | 3 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 2,4,6-Trimethylpyridine | 3 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2,3-Dihydroxypyridine | 20 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-Methylburimamide | 3 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 4-Methylimidazole | 1 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 4-Oxo-4-(3-pyridyl)-butanamide | 3 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-Piperidine carboxamide | 6 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
| 2-Methylpiperidine | 1 | Alkaloids | Pseudoalkaloids | Acetate-derived alkaloids |
| 4-Quinolinecarboxylic acid | 70 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| 5,6-Dihydroxyindole-2-carboxylic acid | 8 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 5,6-Indolequinone-2-carboxylic acid | 4 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 2-Methylindoline | 4 | Alkaloids | Tryptophan alkaloids | Indolines |
| 5-Hydroxy-DL-tryptophan | 10 | Alkaloids | Tryptophan alkaloids | Tryptamines |
| 5-Hydroxyindole | 21 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 5-Hydroxyindoleacetaldehyde | 8 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 5-Methoxydimethyltryptamine | 2 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 5-Methoxyindoleacetaldehyde | 1 | Alkaloids | Tryptophan alkaloids | 3-Alkylindoles |
| 2,4-Dodecadienoic acid pyrrolidide | 3 | Alkaloids | Ornithine alkaloids | Pyrrolidine alkaloids |
| 5-Methoxytryptamine | 69 | Alkaloids | Tryptophan alkaloids | Tryptamines |
| 5-O-(Indol-3-ylacetyl)-myo-inositol D-galactoside | 2 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 5-Pyridoxolactone | 5 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Acetylmorphine | 7 | Alkaloids | Tyrosine alkaloids | Morphinan alkaloids |
| 6-Aminonicotinamide | 2 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2,6-Dihydroxypseudooxynicotine | 7 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Hydroxyindole sulfate | 33 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 2,6-Dihydroxypyridine | 21 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Hydroxymelatonin | 20 | Alkaloids | Tryptophan alkaloids | 3-Alkylindoles |
| 2,6-Pyridinedicarboxylic acid | 15 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2,6-Dimethylpyridine | 3 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Methylnicotinamide | 29 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Methylquinoline | 22 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| 10,11-Dimethoxytubulosan | 2 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| 2-Aminopyridine | 2 | Alkaloids | Pyridine alkaloids | Pyridine alkaloids |
| 9-Methoxycanthin-6-one | 1 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| Abametapir | 2 | Alkaloids | Pyridine alkaloids | Pyridine alkaloids |
| 2-Aminoacridone | 5 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| Acetylcaranine | 2 | Alkaloids | Tyrosine alkaloids | Amarylidaceae alkaloids |
| 2-Aminonicotinic acid | 14 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Acisoga | 78 | Alkaloids | Ornithine alkaloids | Pyrrolidine alkaloids |
| Acutumidine | 5 | Alkaloids | Alkaloids | Other alkaloids |
| Apomorphine | 2 | Alkaloids | Tyrosine alkaloids | Aporphine alkaloids |
