Browse reference spectra from the USGS Spectral Library Version 7 and other curated sources. Each spectrum includes interactive plots, metadata, and downloadable data.
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| Formula | Modality | Category | Source | ||
|---|---|---|---|---|---|
| 17alpha-Hydroxyprogesterone | C21H30O3 | Mass Spec | Environmental | MassBank | |
| 17alpha-Methyltestosterone | C20H30O2 | Mass Spec | Environmental | MassBank | |
| 18-Beta-glycyrrhetinic acid | C30H46O4 | Mass Spec | Natural product | MassBank | |
| 18-HEPE | C20H30O3 | Mass Spec | Lipid | MassBank | |
| 18-METHYLNONADECANOIC ACID METHYL ESTER | C21H42O2 | Mass Spec | Chemical | MassBank | |
| 18-METHYLNONADECANOIC ACID TRIMETHYLSILYLESTER | C23H48O2Si | Mass Spec | Chemical | MassBank | |
| 19-METHYLEICOSANOIC ACID METHYL ESTER | C22H44O2 | Mass Spec | Chemical | MassBank | |
| 19-METHYLEICOSANOIC ACID TRIMETHYLSILYL ESTER | C24H50O2Si | Mass Spec | Chemical | MassBank | |
| 19-NORANDROST-4-ENE-3,17-DIONE | C18H24O2 | Mass Spec | Chemical | MassBank | |
| 19-Nortestosterone | C18H26O2 | Mass Spec | Pharmaceutical | MassBank | |
| 19-O-Methylsiphonaxanthin | C41H58O4 | Mass Spec | Chemical | MassBank | |
| 19S-Methoxytubotaiwine | C21H26N2O3 | Mass Spec | Natural product | MassBank | |
| 1ALPHA,17BETA-DIHYDROXY-5ALPHA-ANDROST-2-ENE | C19H30O2 | Mass Spec | Chemical | MassBank | |
| 1BETA,(4A)BETA-DIMETHYL-7-(1-CARBOMETHOXY-1-METHYL)-(8A)BETA-OCTAHYDRONAPHTHALEN-2(3H)-ONE | C16H26O3 | Mass Spec | Chemical | MassBank | |
| 1BETA-(1-HYDROXY-1-METHYL)ETHYL-1,2,4AALPHA,5,6,7,8,8ABETA-OCTAHYDRONAPHTHALENE | C13H22O | Mass Spec | Chemical | MassBank | |
| 1BETA-HYDROXY-1ALPHA,(4A)BETA-DIMETHYL-7BETA-(1-METHYL-1-HYDROXYETHYL)-(8A)BETA-DECAHYDRONPHTHALENE | C15H28O2 | Mass Spec | Chemical | MassBank | |
| 1COOH-2But-A7-OCH2COOH | C10H18O5 | Mass Spec | Chemical | MassBank | |
| 1COOH-2But-A7EO1 | C10H20O4 | Mass Spec | Chemical | MassBank | |
| 1COOH-2But-A7EO1-OCH2COOH | C12H22O6 | Mass Spec | Chemical | MassBank | |
| 1COOH-2But-A7EO2 | C12H24O5 | Mass Spec | Chemical | MassBank | |
| 1COOH-2But-A7EO2-OCH2COOH | C14H26O7 | Mass Spec | Chemical | MassBank | |
| 1COOH-2But-A7EO3 | C14H28O6 | Mass Spec | Chemical | MassBank | |
| 1H,1H,2H,2H-Perfluorohexanesulphonic acid | C6H5F9O3S | Mass Spec | Chemical | MassBank | |
| 1H,1H,2H,2H-perfluorodecan sulfonate (8:2) (8:2 Fluorotelomer sulfonic acid) | C10H5F17O3S | Mass Spec | Environmental | MassBank | |
| 1H,1H,2H,2H-perfluorodecylphosphate | C10H6F17O4P | Mass Spec | Environmental | MassBank | |
| 1H,1H,2H,2H-perfluorohexanesulfonate (4:2) (4:2 Fluorotelomer sulfonic acid) | C6H5F9O3S | Mass Spec | Environmental | MassBank | |
| 1H,1H,2H,2H-perfluorooctane sulfonate (6:2) (6:2 Fluorotelomer sulfonic acid) | C8H5F13O3S | Mass Spec | Environmental | MassBank | |
| 1H,2H,3H,4H-3-TERT-BUTYLPYRRO(1,2-D)(1,2,4)TRIAZINE-1,4-DIONE | C10H13N3O2 | Mass Spec | Chemical | MassBank | |
| 1H-1,2,3-Triazole | C2H3N3 | Mass Spec | Environmental | MassBank | |
| 1H-1,2,3-triazole-5-OH | C2H3N3O | Mass Spec | Environmental | MassBank | |
| 1H-1,2,4-Triazole | C2H3N3 | Mass Spec | Chemical | MassBank | |
| 1H-Benzimidazole | C7H6N2 | Mass Spec | Pesticide | MassBank | |
| 1H-Benzo[de]isoquinoline-1,3(2H)-dione | C12H7NO2 | Mass Spec | Chemical | MassBank | |
| 1H-Benzo[g]indole | C12H9N | Mass Spec | Chemical | MassBank | |
| 1H-Benzotriazol-1-ol | C6H5N3O | Mass Spec | Environmental | MassBank | |
| 1H-Benzotriazole | C6H5N3 | Mass Spec | Environmental | MassBank | |
| 1H-Benzotriazole TP10 (Tentative) | C5H5N3O3 | Mass Spec | Chemical | MassBank | |
| 1H-Benzotriazole TP18 (Tentative) | C8H7N3O2 | Mass Spec | Chemical | MassBank | |
| 1H-Benzotriazole TP19 (Tentative) | C8H7N3O2 | Mass Spec | Chemical | MassBank | |
| 1H-Benzotriazole TP20 (Tentative) | C6H5N3O4 | Mass Spec | Chemical | MassBank | |
| 1H-Benzotriazole TP21 (Tentative) | C6H5N3O4 | Mass Spec | Chemical | MassBank | |
| 1H-Benzotriazole TP9 (Tentative) | C5H5N3O3 | Mass Spec | Chemical | MassBank | |
| 1H-Benzotriazole, 4(or 5)-methyl- | C7H7N3 | Mass Spec | Environmental | MassBank | |
| 1H-Benzotriazole-4-carboxylic acid (Tentative) | C7H5N3O2 | Mass Spec | Chemical | MassBank | |
| 1H-Benzotriazole-5-carboxylic acid | C7H5N3O2 | Mass Spec | Environmental | MassBank | |
| 1H-Isoindole-1,3(2H)-diimine | C8H7N3 | Mass Spec | Chemical | MassBank | |
| 1H-PYRIMIDO(1,2-A)QUINOLIN-1-ONE | C12H8N2O | Mass Spec | Chemical | MassBank | |
| 1H-TETRAZOLE | CH2N4 | Mass Spec | Chemical | MassBank | |
| 1H-indole-3-carboxylic acid | C9H7NO2 | Mass Spec | Natural product | MassBank | |
| 1METHYLADENOSINE | C11H15N5O4 | Mass Spec | Chemical | MassBank |