MetStat: Summary table of metabolites most frequently reported in NMDR studies
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| Refmet Name | Studies | Super Class | Main Class | Sub Class |
|---|---|---|---|---|
| Adifoline | 1 | Alkaloids | Alkaloids | Other alkaloids |
| Benfluorex | 3 | Alkaloids | Pseudoalkaloids | Phenylalanine-derived alkaloids |
| 4-Oxo-4-(3-pyridyl)-butanamide | 3 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Adiantifoline | 2 | Alkaloids | Tyrosine alkaloids | Aporphine alkaloids |
| Anisotropine methylbromide | 2 | Alkaloids | Ornithine alkaloids | Tropane alkaloids |
| Belladine | 4 | Alkaloids | Tyrosine alkaloids | Amarylidaceae alkaloids |
| 3-Hydroxyquinine | 5 | Alkaloids | Tryptophan alkaloids | Cinchona alkaloids |
| 4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanol | 8 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Formylindolo[3,2-B]carbazole | 6 | Alkaloids | Tryptophan alkaloids | Indolocarbazoles |
| Acutumidine | 5 | Alkaloids | Alkaloids | Other alkaloids |
| Amalorin | 4 | Alkaloids | Alkaloids | Other alkaloids |
| Aniflorine | 3 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| Arecoline | 36 | Alkaloids | Alkaloids | Other alkaloids |
| Barbamide | 2 | Alkaloids | Serine alkaloids | Thiazole alkaloids |
| 3-Hydroxyindolin-2-one | 9 | Alkaloids | Tryptophan alkaloids | Indolines |
| 3-Hydroxypyridine sulfate | 44 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 3-Succinoylpyridine | 14 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-Methylimidazole | 1 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 5-Hydroxydopamine | 6 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 6beta-Hydroxynaltrexone | 1 | Alkaloids | Tyrosine alkaloids | Morphinan alkaloids |
| 7-Aminonitrazepam | 4 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| Actinidine | 5 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| alpha-Ergocryptine | 2 | Alkaloids | Tryptophan alkaloids | Ergot alkaloids |
| Amabiline | 5 | Alkaloids | Alkaloids | Other alkaloids |
| Amurine | 2 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| Anhalamine | 4 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| Apodine | 2 | Alkaloids | Tryptophan alkaloids | Aspidosperma type |
| Arcyriaflavin A | 1 | Alkaloids | Tryptophan alkaloids | Carbazole alkaloids |
| Atropine | 5 | Alkaloids | Ornithine alkaloids | Tropane alkaloids |
| Baptifoline | 4 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 3-Acetylnerbowdine | 1 | Alkaloids | Tyrosine alkaloids | Amarylidaceae alkaloids |
| 3-Hydroxy-2-methylpyridine-4,5-dicarboxylate | 13 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 3-Hydroxyisonicotinic acid | 2 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 3-Hydroxypyridine | 39 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 3-Methoxytyramine sulfate | 24 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 3-Pyridylacetic acid | 28 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-(Hydroxyamino)quinoline N-oxide | 4 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| 4-Methylburimamide | 3 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 5,6-Dihydroxyindole | 1 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 5-Hydroxy-DL-tryptophan | 10 | Alkaloids | Tryptophan alkaloids | Tryptamines |
| 5-Methoxyindoleacetic acid | 40 | Alkaloids | Tryptophan alkaloids | Indoleacetic acids |
| 6-Acetylmorphine | 4 | Alkaloids | Tyrosine alkaloids | Morphinan alkaloids |
| 6-Hydroxypseudooxynicotine | 15 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 7-Aminoclonazepam | 6 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| Acepromazine | 2 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| Acronycine | 2 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| Affinine | 1 | Alkaloids | Alkaloids | Other alkaloids |
| Alosetron | 5 | Alkaloids | Tryptophan alkaloids | N-alkylindoles |
| alpha-Narcotine | 3 | Alkaloids | Alkaloids | Other alkaloids |
| Altanserin | 2 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| Ambelline | 1 | Alkaloids | Tyrosine alkaloids | Amarylidaceae alkaloids |
| Aminopyridine | 1 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Anapheline | 3 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
| Angustine | 4 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| Antirhine | 2 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| Apoatropine | 5 | Alkaloids | Ornithine alkaloids | Tropane alkaloids |
| 2-Hydroxypyridine | 96 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Arborinine | 4 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| Atalanine | 1 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| Atherospermidine | 4 | Alkaloids | Tyrosine alkaloids | Aporphine alkaloids |
| Auriculine | 2 | Alkaloids | Ornithine alkaloids | Pyrrolizidine alkaloids |
| Azaspiracid-1 | 1 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
| 1-Carbazol-9-yl-3-(3,5-dimethyl-pyrazol-1-yl)-propan-2-ol | 3 | Alkaloids | Tryptophan alkaloids | Carbazole alkaloids |
| 3,4-Dimethoxyphenylethylamine | 3 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 3-Amino-1,4-dimethyl-5H-pyrido[4,3-b]indole | 1 | Alkaloids | Tryptophan alkaloids | Carbazole alkaloids |
| 3-(Dimethylaminomethyl)indole | 6 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 1H-Indole-3-acetamide | 90 | Alkaloids | Tryptophan alkaloids | Tryptamines |
| 3-Hydroxyindolin-2-one sulfate | 8 | Alkaloids | Tryptophan alkaloids | Indolines |
| 3-Hydroxykynurenic acid | 3 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| 1-Methylhistamine | 150 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 3-Indolebutyric acid | 31 | Alkaloids | Tryptophan alkaloids | 3-Alkylindoles |
| 3-Methoxytyramine | 101 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 3-Methylindole | 70 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 3-Pyridinecarboxaldehyde | 3 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4,6-Dihydroxyquinoline | 13 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| 4-Deoxypyridoxine 5'-phosphate | 1 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-Imidazolone-5-propionic acid | 48 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 4-Methoxytyramine | 2 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 4-Pyridone | 26 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-Quinolinecarboxylic acid | 69 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| 5,6-Dihydroxyindole-2-carboxylic acid | 7 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 5-Aminoimidazole-4-carboxamide | 17 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 5-Hydroxyindoleacetic acid | 340 | Alkaloids | Tryptophan alkaloids | Indoleacetic acids |
| 5-Methoxyindoleacetaldehyde | 1 | Alkaloids | Tryptophan alkaloids | 3-Alkylindoles |
| 5-Methoxytryptophol | 43 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 5-S-Cysteinyldopamine | 2 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 6-Hydroxyindole sulfate | 33 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 6-Hydroxynicotinic acid | 88 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Methylnicotinamide | 27 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 7-Acetamidonitrazepam | 1 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| 8-Hydroxycarvedilol | 1 | Alkaloids | Tryptophan alkaloids | Carbazole alkaloids |
| 8-Oxodeoxycoformycin | 10 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| Acetylcaranine | 2 | Alkaloids | Tyrosine alkaloids | Amarylidaceae alkaloids |
| Acremoauxin A | 3 | Alkaloids | Tryptophan alkaloids | Indoleacetic acids |
| Adrenochrome | 13 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| Afegostat | 18 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
| Ajmalicine | 1 | Alkaloids | Tryptophan alkaloids | Corynanthean-type alkaloids |
| Allocryptopine | 4 | Alkaloids | Alkaloids | Other alkaloids |
| alpha-Erythroidine | 2 | Alkaloids | Alkaloids | Other alkaloids |
| alpha-Hydroxytriazolam | 5 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| Alpinine | 3 | Alkaloids | Alkaloids | Other alkaloids |
| Alprazolam | 7 | Alkaloids | Anthranilic acid alkaloids | Benzodiazepine alkaloids |
| 2-Ethylisonicotinicacid | 2 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Amataine | 2 | Alkaloids | Tryptophan alkaloids | Aspidosperma type |
| Aminoimidazolecarboxamide | 1 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 1,2,3,4-Tetrahydro-beta-carboline-1,3-dicarboxylic acid | 4 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| Anabasamine | 9 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Anabasine | 7 | Alkaloids | Alkaloids | Other alkaloids |
| Anatoxin A | 1 | Alkaloids | Alkaloids | Other alkaloids |
| Androcymbine | 2 | Alkaloids | Alkaloids | Other alkaloids |
| 3,4-Dihydroxyphenylglycol | 67 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| Ankorine | 6 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| Aphylline | 1 | Alkaloids | Alkaloids | Other alkaloids |
| Apixaban | 2 | Alkaloids | Tryptophan alkaloids | Strychnos alkaloids |
| 2-Hydroxynicotinic acid | 2 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2-Hydroxyphenethylamine | 80 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| Apomorphine | 1 | Alkaloids | Tyrosine alkaloids | Aporphine alkaloids |
| Apparicine | 2 | Alkaloids | Alkaloids | Other alkaloids |
| Argyrolobine | 2 | Alkaloids | Alkaloids | Other alkaloids |
| Aspidospermine | 3 | Alkaloids | Tryptophan alkaloids | Aspidosperma type |
| Atalaphylline | 4 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| Atheriline | 3 | Alkaloids | Tyrosine alkaloids | Aporphine alkaloids |
| 2-Methyl-3-hydroxy-5-formylpyridine-4-carboxylate | 10 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Auricularine | 5 | Alkaloids | Tryptophan alkaloids | Pyrroloindole alkaloids |
| 2-Methylindoline | 4 | Alkaloids | Tryptophan alkaloids | Indolines |
| 2-Methylindole | 4 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 10,11-Dimethoxytubulosan | 2 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| 1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene acetaldehyde | 2 | Alkaloids | Tryptophan alkaloids | Other indoles |
| 1-(beta-D-Ribofuranosyl)-1,4-dihydronicotinamide | 17 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 1-Benzyl-1,2,3,4-tetrahydroisoquinoline | 3 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| 1-Carboxymethylmetronidazole | 2 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 3-Acetylpyridine | 1 | Alkaloids | Pyridine alkaloids | Pyridine alkaloids |
| 3-Amino-1-methyl-5H-pyrido[4,3-b]indole | 2 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| 3beta,6beta-Dihydroxynortropane | 1 | Alkaloids | Ornithine alkaloids | Tropane alkaloids |
| 10-Hydroxydihydrosanguinarine | 1 | Alkaloids | Tyrosine alkaloids | Benzophenanthridine alkaloids |
| 13-Hydroxylupanine | 2 | Alkaloids | Lysine alkaloids | Quinolizidine alkaloids |
| 1H-Indole-3-carboxaldehyde | 124 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 1H-Indole-7-acetic acid | 9 | Alkaloids | Tryptophan alkaloids | Indoleacetic acids |
| 1-Methyl-5-imidazoleacetic acid | 44 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 1-Methyl nicotinamide | 327 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 1-Methyl-5-imidazolelactate | 12 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 1-Methyl-beta-carboline-3-carboxylic acid | 10 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| 3-Imidazol-1-yl-2-oxopropanoic acid | 1 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 3-Indoleacetonitrile | 27 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 3-Indoleglyoxylic acid | 29 | Alkaloids | Tryptophan alkaloids | Indoleacetic acids |
| 3-Indolepropionic acid | 214 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 3-Methyldioxyindole | 42 | Alkaloids | Tryptophan alkaloids | Indolines |
| 3-Methyleneoxindole | 54 | Alkaloids | Tryptophan alkaloids | Indolines |
| 3-Methyloxindole | 42 | Alkaloids | Tryptophan alkaloids | Indolines |
| 3-Pyridinebutanoic acid | 5 | Alkaloids | Pyridine alkaloids | Pyridine alkaloids |
| 2-Oxindole-3-acetate | 52 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 4,21-Dehydrogeissoschizine | 1 | Alkaloids | Tryptophan alkaloids | Carboline alkaloids |
| 4-Amino-1-piperidinecarboxylic acid | 8 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
| 4-Aminopyridine | 19 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2(N)-Methyl-norsalsolinol | 3 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| 4-Hydroxyindole | 12 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 2,3-Dihydroxypyridine | 20 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2,3-Dihydroxyindole | 3 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 2-Aminoacridone | 5 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| 4-Piperidine carboxamide | 5 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
| 4-Pyridoxic acid | 468 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 4-Pyridoxolactone | 19 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2,4,6-Trimethylpyridine | 3 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2,4-Dodecadienoic acid pyrrolidide | 3 | Alkaloids | Ornithine alkaloids | Pyrrolidine alkaloids |
| 5,6-Indolequinone-2-carboxylic acid | 4 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 5-Aminoimidazole | 4 | Alkaloids | Histidine alkaloids | Imidazole alkaloids |
| 5-Hydroxyindole | 21 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 5-Hydroxyindoleacetaldehyde | 7 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 5-Hydroxyindolepyruvic acid | 7 | Alkaloids | Tryptophan alkaloids | Indolecarboxylic acids |
| 5-Hydroxytryptophol | 56 | Alkaloids | Tryptophan alkaloids | Simple indole alkaloids |
| 5-Methoxytryptamine | 68 | Alkaloids | Tryptophan alkaloids | Tryptamines |
| 5-Methoxytryptophan | 41 | 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 |
| 2-Pyridyl hydroxymethane sulfonic acid | 5 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Hydroxydopamine | 27 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| 6-Hydroxykynurenic acid | 32 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| 6-Hydroxymelatonin | 18 | Alkaloids | Tryptophan alkaloids | 3-Alkylindoles |
| 2,6-Dihydroxypseudooxynicotine | 7 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Methoxyquinoline | 14 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| 2,6-Dihydroxypyridine | 21 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 6-Methylquinoline | 20 | Alkaloids | Anthranilic acid alkaloids | Quinazoline alkaloids |
| 2,6-Dimethylpyridine | 2 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 7-Hydroxymitragynine | 4 | Alkaloids | Tryptophan alkaloids | Tryptamines |
| 2,6-Pyridinedicarboxylic acid | 15 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 8-Methoxykynurenic acid | 32 | Alkaloids | Anthranilic acid alkaloids | Acridone alkaloids |
| Acetylagmatine | 15 | Alkaloids | Ornithine alkaloids | Polyamines |
| 2-Acetylpyrrolidine | 11 | Alkaloids | Ornithine alkaloids | Pyrrolidine alkaloids |
| Acetylisoniazid | 7 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Acisoga | 78 | Alkaloids | Ornithine alkaloids | Pyrrolidine alkaloids |
| 3,4-Dihydroxybenzylamine | 8 | Alkaloids | Tyrosine alkaloids | Phenylethylamines |
| Adlumine | 3 | Alkaloids | Alkaloids | Other alkaloids |
| 2-Aminonicotinic acid | 12 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| 2-Aminopyridine | 1 | Alkaloids | Pyridine alkaloids | Pyridine alkaloids |
| Agmatine | 156 | Alkaloids | Ornithine alkaloids | Polyamines |
| Agroclavine | 2 | Alkaloids | Alkaloids | Other alkaloids |
| Ajmaline | 10 | Alkaloids | Alkaloids | Other alkaloids |
| Aknadicine | 2 | Alkaloids | Tyrosine alkaloids | Isoquinoline alkaloids |
| 2-Cyanopyridine | 1 | Alkaloids | Pyridine alkaloids | Nicotinic acid alkaloids |
| Benproperine | 1 | Alkaloids | Lysine alkaloids | Piperidine alkaloids |
