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 | ||
|---|---|---|---|---|---|
| alpha-D-Galactose-1-phosphate | C6H13O9P | Mass Spec | Metabolite | MassBank | |
| alpha-D-Glucose 6-phosphate | C6H13O9P | Mass Spec | Natural product | MassBank | |
| alpha-D-Glucose-1,6-diphosphate | C6H14O12P2 | Mass Spec | Metabolite | MassBank | |
| alpha-D-glucose-1-phosphate | C6H13O9P | Mass Spec | Metabolite | MassBank | |
| alpha-Echinenone | C40H54O | Mass Spec | Chemical | MassBank | |
| alpha-Estradiol | C18H24O2 | Mass Spec | Natural product | MassBank | |
| alpha-Hederin | C41H66O12 | Mass Spec | Natural product | MassBank | |
| alpha-Hexabromocyclododecane | C12H18Br6 | Mass Spec | Natural product | MassBank | |
| alpha-Hydroxyhippuric acid | C9H9NO4 | Mass Spec | Chemical | MassBank | |
| alpha-Hydroxyisovaleric acid | C5H10O3 | Mass Spec | Lipid | MassBank | |
| alpha-Hydroxymidazolam | C18H13ClFN3O | Mass Spec | Environmental | MassBank | |
| alpha-Ketoglutaric acid | C5H6O5 | Mass Spec | Natural product | MassBank | |
| alpha-LA-[d14] | C18H32O2 | Mass Spec | Lipid | MassBank | |
| alpha-Lactose | C12H22O11 | Mass Spec | Natural product | MassBank | |
| alpha-Lapachone | C15H14O3 | Mass Spec | Natural product | MassBank | |
| alpha-Linolenoyl Ethanolamide | C20H35NO2 | Mass Spec | Chemical | MassBank | |
| alpha-Lipoic acid | C8H14O2S2 | Mass Spec | Environmental | MassBank | |
| alpha-Methyl-DL-histidine | C7H11N3O2 | Mass Spec | Metabolite | MassBank | |
| alpha-Methyl-DL-serine | C4H9NO3 | Mass Spec | Natural product | MassBank | |
| alpha-MethylBenzylamine | C8H11N | Mass Spec | Natural product | MassBank | |
| alpha-Methylstyrene | C9H10 | Mass Spec | Chemical | MassBank | |
| alpha-Santonin | C15H18O3 | Mass Spec | Environmental | MassBank | |
| alpha-Solanine | C45H73NO15 | Mass Spec | Chemical | MassBank | |
| alpha-Thioglycerol | C3H8O2S | Mass Spec | Natural product | MassBank | |
| alpha-Tocomonoenol | C29H48O2 | Mass Spec | Lipid | MassBank | |
| alpha-Tocopherol | C29H50O2 | Mass Spec | Natural product | MassBank | |
| alpha-Tocotrienol | C29H44O2 | Mass Spec | Lipid | MassBank | |
| alpha-c-C6H8O2 | alpha-c-C6H8O2 | UV-Vis | Atmospheric | MPI-Mainz UV/VIS Atlas | |
| alpha-cyano-4-hydroxycinnamic acid | C10H7NO3 | Mass Spec | Natural product | MassBank | |
| alpha-ketoglutaric acid-[1,2,3,4,5-13C5] | C5H6O5 | Mass Spec | Chemical | MassBank | |
| alpha-ketoglutaric acid-[1,2,3,4-13C4] | C5H6O5 | Mass Spec | Chemical | MassBank | |
| alpha-linolenic acid | C18H30O2 | Mass Spec | Chemical | MassBank | |
| alpha/beta - 1,2-Dibromo-4-(1,2-dibromoethyl)cyclohexane | C8H12Br4 | Mass Spec | Natural product | MassBank | |
| arsenic trioxide | As2 O3 | Raman | Mineral | ROD | |
| ascr#1 | C13H24O6 | Mass Spec | Chemical | MassBank | |
| ascr#17 | C17H30O6 | Mass Spec | Chemical | MassBank | |
| ascr#7 | C13H22O6 | Mass Spec | Chemical | MassBank | |
| asulCP (excitation) | — | Fluorescence | Fluorescent protein | FPbase | |
| b Zearalanol | C18H26O5 | Mass Spec | Environmental | MassBank | |
| b Zearalenol | C18H24O5 | Mass Spec | Environmental | MassBank | |
| b-Ala | C3H7NO2 | Mass Spec | Chemical | MassBank | |
| b-Ala-Lys | C9H19N3O3 | Mass Spec | Chemical | MassBank | |
| b-Alanine | C3H7NO2 | Mass Spec | Natural product | MassBank | |
| b-Cyano-L-Alanine | C4H6N2O2 | Mass Spec | Natural product | MassBank | |
| b-Glutamic acid | C5H9NO4 | Mass Spec | Natural product | MassBank | |
| b-Guanidinopropionate | C4H9N3O2 | Mass Spec | Chemical | MassBank | |
| b-HCH | C6H6Cl6 | Mass Spec | Natural product | MassBank | |
| b-Hydroxybutyrate | C4H8O3 | Mass Spec | Chemical | MassBank | |
| b-Hydroxypropionate | C3H6O3 | Mass Spec | Chemical | MassBank | |
| b-Imidazolelactate | C6H8N2O3 | Mass Spec | Chemical | MassBank |