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 | ||
|---|---|---|---|---|---|
| o-Coumaric acid | C9H8O3 | Mass Spec | Natural product | MassBank | |
| o-Dianisidine | C14H16N2O2 | Mass Spec | Environmental | MassBank | |
| o-Fluorobenzoate | C7H5FO2 | Mass Spec | Chemical | MassBank | |
| o-Hydroxybenzoate | C7H6O3 | Mass Spec | Chemical | MassBank | |
| o-Hydroxyhippurate | C9H9NO4 | Mass Spec | Chemical | MassBank | |
| o-Phenanthroline | C12H8N2 | Mass Spec | Chemical | MassBank | |
| o-Terphenyl SA-T2800 | — | NIR | Organic | USGS | |
| o-Terphenyl SA-T2800 75K | — | NIR | Organic | USGS | |
| o-Terphenyl SA-T2800 85K | — | NIR | Organic | USGS | |
| o-Toluate | C8H8O2 | Mass Spec | Chemical | MassBank | |
| o-Toluic acid | C8H8O2 | Mass Spec | Natural product | MassBank | |
| o-hexyl methylfluorophosphonate | C7H16FO3P | Mass Spec | Chemical | MassBank | |
| oNA | C7H7NO3 | Mass Spec | Natural product | MassBank | |
| ooo-TMPP | C21H21O4P | Mass Spec | Natural product | MassBank | |
| ortho-Chlorophenylpiperazine | C10H13ClN2 | Mass Spec | Environmental | MassBank | |
| ortho-Hydroxyatorvastatin | C33H35FN2O6 | Mass Spec | Environmental | MassBank | |
| osas#9 | C23H33NO10 | Mass Spec | Chemical | MassBank | |
| oxBFP (emission) | — | Fluorescence | Fluorescent protein | FPbase | |
| p,p'-DDD | C14H10Cl4 | Mass Spec | Pesticide | MassBank | |
| p,p'-DDE | C14H8Cl4 | Mass Spec | Pesticide | MassBank | |
| p,p'-DDT | C14H9Cl5 | Mass Spec | Pesticide | MassBank | |
| p-Acetamidophenylglucuronide | C14H17NO8 | Mass Spec | Natural product | MassBank | |
| p-Aminobenzoate | C7H7NO2 | Mass Spec | Chemical | MassBank | |
| p-Aminohippuric acid | C9H10N2O3 | Mass Spec | Natural product | MassBank | |
| p-Anisate | C8H8O3 | Mass Spec | Chemical | MassBank | |
| p-C6H4(NO2)Cl | p-C6H4(NO2)Cl | UV-Vis | Atmospheric | MPI-Mainz UV/VIS Atlas | |
| p-CH3-o-C6H3(OH)(NO2) | p-CH3-o-C6H3(OH)(NO2) | UV-Vis | Atmospheric | MPI-Mainz UV/VIS Atlas | |
| p-Chlorophenoxyacetate | C8H7ClO3 | Mass Spec | Chemical | MassBank | |
| p-Coumarate | C9H8O3 | Mass Spec | Chemical | MassBank | |
| p-Coumaric acid | C9H8O3 | Mass Spec | Chemical | MassBank | |
| p-Cresol sulfate | C7H8O4S | Mass Spec | Natural product | MassBank | |
| p-Cymen-8-ol | C10H14O | Mass Spec | Chemical | MassBank | |
| p-Hydroxybenzoate | C7H6O3 | Mass Spec | Chemical | MassBank | |
| p-Hydroxyphenylacetate | C8H8O3 | Mass Spec | Chemical | MassBank | |
| p-Hydroxyphenylpyruvate | C9H8O4 | Mass Spec | Chemical | MassBank | |
| p-Nitroaniline | C6H6N2O2 | Mass Spec | Chemical | MassBank | |
| p-Phenetidine | C8H11NO | Mass Spec | Chemical | MassBank | |
| p-Toluenesulfonamide | C7H9NO2S | Mass Spec | Environmental | MassBank | |
| p-Toluenesulfonic acid | C7H8O3S | Mass Spec | Environmental | MassBank | |
| p-Xylenol blue | C23H22O5S | Mass Spec | Chemical | MassBank | |
| pBDN | C8H4N2 | Mass Spec | Natural product | MassBank | |
| pHmScarlet (excitation) | — | Fluorescence | Fluorescent protein | FPbase | |
| para-Hydroxyatorvastatin | C33H35FN2O6 | Mass Spec | Environmental | MassBank | |
| pcStar (excitation) | — | Fluorescence | Fluorescent protein | FPbase | |
| pelargonidin-3,5-di-O-glucoside | [C27H31O15]+ | Mass Spec | Natural product | MassBank | |
| pelargonidin-3-O-glucoside | [C21H21O10]+ | Mass Spec | Natural product | MassBank | |
| pentabromotoluene | C7H3Br5 | Mass Spec | Natural product | MassBank | |
| peonidin-3-o-beta-d-glucopyranoside | [C22H23O11]+ | Mass Spec | Chemical | MassBank | |
| plobRFP (excitation) | — | Fluorescence | Fluorescent protein | FPbase | |
| ppp-TMPP | C21H21O4P | Mass Spec | Natural product | MassBank |