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 | ||
|---|---|---|---|---|---|
| 4-METHYL-2,6-DI-TERT-BUTYLPHENYL-N-METHYLCARBAMATE | C17H25NO2 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-(4-METHYL-6-OXO-1-OXAHEXYL)TETRAHYDRO-2H-PYRAN | C12H22O3 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-(5-HYDROXY-3-METHYLPENTOXY)TETRAHYDRO-2H-PYRAN | C12H24O3 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-(TRIMETHYLSILYL)OXYBENZOIC ACIDTRIMETHYLSILYL ESTER | C14H24O3Si2 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-HEXANONE | C7H14O | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-PENTANOL | C6H14O | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-PENTANONE | C6H12O | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-PENTENOIC ACID METHYL ESTER | C7H12O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-PENTENOIC ACID TRIMETHYLSILYL ESTER | C9H18O2Si | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-PHENYLPURIMIDINE | C11H10N2 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-PHENYLTHIAZOLE | C10H9NS | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-PIPERIDONE | C6H11NO | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-PROPYLTHIAZOLE | C7H11NS | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2-TRIMETHYLSILOXYHEXENE | C10H22OSi | Mass Spec | Chemical | MassBank | |
| 4-METHYL-2H-PYRAN | C6H8O | Mass Spec | Chemical | MassBank | |
| 4-METHYL-3-CYCLOHEXENYL 4-METHYL-3-PENTENYL KETONE | C14H22O | Mass Spec | Chemical | MassBank | |
| 4-METHYL-3-OXATRICYCLO(3.3.0.0(4,6))OCTA-2,8-DIONE | C8H8O3 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-4-PARA-TOLYLSPIRO(4,5)DECAN-1-ONE | C18H24O | Mass Spec | Chemical | MassBank | |
| 4-METHYL-4-VINYLBUTYROLACTONE | C7H10O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-5,6-DIHYDRO-2-PYRONE | C6H8O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-5,6-DIHYDRO-2H-PYRAN | C6H10O | Mass Spec | Chemical | MassBank | |
| 4-METHYL-6-HEPTEN-4-OLIDE | C8H12O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-6-PHENYLPYRIMIDINE | C11H10N2 | Mass Spec | Chemical | MassBank | |
| 4-METHYL-8-HYDROXYQUINOLINE | C10H9NO | Mass Spec | Chemical | MassBank | |
| 4-METHYLAMINO-2(5H)-FURANONE | C5H7NO2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLAMINO-ANTIPYRINE | C12H15N3O | Mass Spec | Chemical | MassBank | |
| 4-METHYLBENZOIC ACID (ALPHA-13C) | C8H8O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLBENZOIC ACID METHYL ESTER | C9H10O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLBENZOIC ACID TRIMETHYLSILYL ESTER | C11H16O2Si | Mass Spec | Chemical | MassBank | |
| 4-METHYLBENZOPHENONE | C14H12O | Mass Spec | Chemical | MassBank | |
| 4-METHYLBENZYL ALCOHOL | C8H10O | Mass Spec | Chemical | MassBank | |
| 4-METHYLBENZYL BENZOATE | C15H14O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLBENZYL SALICYLATE | C15H14O3 | Mass Spec | Chemical | MassBank | |
| 4-METHYLBICYCLO(3.2.2)NONA-3,6-DIEN-2-ONE | C10H12O | Mass Spec | Chemical | MassBank | |
| 4-METHYLCARBAZOLE | C13H11N | Mass Spec | Chemical | MassBank | |
| 4-METHYLCYCLOHEXANOL | C7H14O | Mass Spec | Chemical | MassBank | |
| 4-METHYLCYCLOHEXANONE | C7H12O | Mass Spec | Chemical | MassBank | |
| 4-METHYLCYCLOHEXENE | C7H12 | Mass Spec | Chemical | MassBank | |
| 4-METHYLCYCLOHEXYL ACETATE | C9H16O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLENE-2-(2-PHENYLETHYL)-TETRAHYDROPYRAN | C14H18O | Mass Spec | Chemical | MassBank | |
| 4-METHYLENE-5-HEXEN-2-OL | C7H12O | Mass Spec | Chemical | MassBank | |
| 4-METHYLENECYCLOHEXYL 4-METHYL-3-PENTENYLKETONE | C14H22O | Mass Spec | Chemical | MassBank | |
| 4-METHYLHEPTANE | C8H18 | Mass Spec | Chemical | MassBank | |
| 4-METHYLNONANE | C10H22 | Mass Spec | Chemical | MassBank | |
| 4-METHYLNONANOIC ACID METHYL ESTER | C11H22O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLOCTANE | C9H20 | Mass Spec | Chemical | MassBank | |
| 4-METHYLPENTAN-2-ONE | C6H12O | Mass Spec | Chemical | MassBank | |
| 4-METHYLPENTANOL | C6H14O | Mass Spec | Chemical | MassBank | |
| 4-METHYLPENTYL 4-METHYLPENTANOATE | C12H24O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLPENTYL BENZOATE | C13H18O2 | Mass Spec | Chemical | MassBank |