Science Advances

Supplementary Materials

This PDF file includes:

  • Fragmentation pattern
  • Search for the amino acid alanine
  • Phosphorus
  • fig. S1. Contribution of the main fragments of glycine, methylamine, and ethylamine for a DFMS mass spectrum on Aug. 3, 2015.
  • fig. S2. Mass spectra of mass 89 Da/e, taken adjacent to the mass spectra in Fig. 1.
  • fig. S3. Mass spectra of masses 31 and 34 Da/e.
  • References (32, 33)

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