. 2017 Oct 11;292(47):19441–19457. doi: 10.1074/jbc.M117.815910

Table 4.

The major fragments of the precursor ion at m/z 1274.7612

Fragment ions originating from the precursor molecular ion of 1274 were subjected to MS/MS fragmentation as described under “Experimental procedures.” The proposed molecular formulae of the product ions are supported by the observed isotope patterns for the relevant ions.

m/z	Formula	Mass error
		ppm
158.92409	HP₂O₆	−1.24
225.01646	C₆H₁₀PO₇	2.64
428.09637	C₁₄H₂₃O₁₂NP	2.64
508.06271	C₁₄H₂₄O₁₅NP₂	2.25
907.61481	C₅₅H₈₉O₆P₂	2.12
1274.76084	C₆₉H₁₁₄O₁₆NP₂	0.08