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  1. Vinyl acetate | C4H6O2 | CID 7904 - PubChem

  2. 3-Butenoic acid - Optional[13C NMR] - Spectrum - SpectraBase

  3. Vinyl acetate - Optional[1H NMR] - Chemical Shifts - SpectraBase

  4. alpha-CROTONIC ACID - Optional[1H NMR] - Spectrum

  5. NMR Isomers of C4h6o2

  6. Nuclear magnetic resonance data of C4H6O2 | Request PDF

  7. C4H6O2 | MD Topology | NMR | X-Ray - University of Queensland

  8. Methacrylic acid(79-41-4) 13C NMR spectrum - ChemicalBook

  9. 碳谱解析 - 豆丁网

  10. gamma-Butyrolactone | C4H6O2 | CID 7302 - PubChem