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-METHYLPHENOL | C7H8O | Mass Spec | Chemical | MassBank | |
| 4-METHYLPHENYL HEXANOATE | C13H18O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLPHENYL TRANS-2-HEXENOATE | C13H16O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLPHENYLAMINO-2(5H)-FURANONE | C11H11NO2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLPIPERIDINE | C6H13N | Mass Spec | Chemical | MassBank | |
| 4-METHYLPYRIDINE | C6H7N | Mass Spec | Chemical | MassBank | |
| 4-METHYLQUINOLIN-2-OL | C10H9NO | Mass Spec | Chemical | MassBank | |
| 4-METHYLQUINOLINE | C10H9N | Mass Spec | Chemical | MassBank | |
| 4-METHYLSTYRENE | C9H10 | Mass Spec | Chemical | MassBank | |
| 4-METHYLSTYRENE OXIDE | C9H10O | Mass Spec | Chemical | MassBank | |
| 4-METHYLSULFINYLBENZYL BENZOATE | C15H14O3S | Mass Spec | Chemical | MassBank | |
| 4-METHYLTETRAHYDRO-2-PYRONE | C6H10O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLTETRAHYDROPYRAN | C6H12O | Mass Spec | Chemical | MassBank | |
| 4-METHYLTETRAHYDROPYRAN-4-OL | C6H12O2 | Mass Spec | Chemical | MassBank | |
| 4-METHYLTHIAZOLE | C4H5NS | Mass Spec | Chemical | MassBank | |
| 4-Malonyl ononin (NMR) | C25H24O12 | Mass Spec | Natural product | MassBank | |
| 4-Methoxy-1-Naphthaldehyde | C12H10O2 | Mass Spec | Environmental | MassBank | |
| 4-Methoxy-2-methylaniline | C8H11NO | Mass Spec | Chemical | MassBank | |
| 4-Methoxy-3-indolylmethyl glucosinolate | C17H22N2O10S2 | Mass Spec | Natural product | MassBank | |
| 4-Methoxy-6-methyl-1,3,5-triazin-2-amine | C5H8N4O | Mass Spec | Environmental | MassBank | |
| 4-Methoxyaniline | C7H9NO | Mass Spec | Environmental | MassBank | |
| 4-Methoxybenzenamine | C7H9NO | Mass Spec | Chemical | MassBank | |
| 4-Methoxycinnamaldehyde | C10H10O2 | Mass Spec | Chemical | MassBank | |
| 4-Methoxycinnamic acid | C10H10O3 | Mass Spec | Environmental | MassBank | |
| 4-Methoxyphenol | C7H8O2 | Mass Spec | Chemical | MassBank | |
| 4-Methyl Benzoic acid | C8H8O2 | Mass Spec | Natural product | MassBank | |
| 4-Methyl-1H-benzotriazole | C7H7N3 | Mass Spec | Chemical | MassBank | |
| 4-Methyl-2-nitroaniline | C7H8N2O2 | Mass Spec | Chemical | MassBank | |
| 4-Methyl-2-nitrophenol | C7H7NO3 | Mass Spec | Chemical | MassBank | |
| 4-Methyl-2-oxopentanoate | C6H10O3 | Mass Spec | Chemical | MassBank | |
| 4-Methyl-2-oxovaleric acid | C6H10O3 | Mass Spec | Natural product | MassBank | |
| 4-Methyl-2-pentanone | — | Raman | Pharmaceutical | Pharma Raman 2025 | |
| 4-Methyl-5-thiazoleethanol | C6H9NOS | Mass Spec | Pharmaceutical | MassBank | |
| 4-Methylaniline | C7H9N | Mass Spec | Chemical | MassBank | |
| 4-Methylbenzenesulfonic acid | C7H8O3S | Mass Spec | Chemical | MassBank | |
| 4-Methylbenzoate | C8H8O2 | Mass Spec | Chemical | MassBank | |
| 4-Methylbenzoic acid | C8H8O2 | Mass Spec | Chemical | MassBank | |
| 4-Methylbenzotriazole | C7H7N3 | Mass Spec | Environmental | MassBank | |
| 4-Methylbenzylidene camphor | C18H22O | Mass Spec | Environmental | MassBank | |
| 4-Methylcoumarin | C10H8O2 | Mass Spec | Environmental | MassBank | |
| 4-Methylmorpholine-N-oxide | C5H11NO2 | Mass Spec | Environmental | MassBank | |
| 4-Methylpentanoate | C6H12O2 | Mass Spec | Chemical | MassBank | |
| 4-Methylphthalic anhydride | C9H6O3 | Mass Spec | Chemical | MassBank | |
| 4-Methylpyrazole | C4H6N2 | Mass Spec | Chemical | MassBank | |
| 4-Methylpyrimidine | C5H6N2 | Mass Spec | Environmental | MassBank | |
| 4-Methylsulfinylbutyl glucosinolate | C12H23NO10S3 | Mass Spec | Chemical | MassBank | |
| 4-Methylthiobutyl glucosinolate | C12H23NO9S3 | Mass Spec | Chemical | MassBank | |
| 4-Methylumbelliferone | C10H8O3 | Mass Spec | Natural product | MassBank | |
| 4-Methylumbelliferyl sulfate | C10H8O6S | Mass Spec | Environmental | MassBank | |
| 4-Methylumbelliferyl-beta-D-glucuronide | C16H16O9 | Mass Spec | Environmental | MassBank |