Fig. 2: Hexoses found in Bennu sample OREX-800107-108.
a, MRM chromatograms of derivatized hexose fragments in the Bennu extract using a DB-17ms column. b, MRM chromatograms of derivatized hexose standards. c, MRM chromatograms of SiO2 blank. d, Fragmentation of EI of derivatized glucose (glucononitrile pentaacetate). e, EI fragment spectrum of derivatized glucose. Collision-induced dissociations of the EI fragments are shown in Extended Data Fig. 3. Only the presence of peaks of all six transitions with consistent intensity ratios to standards leads to a confident detection. The additional peaks observed are derived from co-eluting compounds. The co-eluting compounds least influenced the mass transition of m/z 212 to 152.
