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. 2020 Mar 9;5(10):5372–5379. doi: 10.1021/acsomega.9b04411

Table 1. Isotope Abundance of Mass Peaks Detected at m/z 341 (%).

			FT-ICR MS		Orbitrap MS
molecular formula [M – H]⁻	MW (Da)	theoretical isotopic ratio (%)	relative intensity^a (%)	measured isotopic ratio (%)	relative intensity^a (%)	measured isotopic ratio (%)
C₁₃H₉O₁₁	341.013938	14.58	22	12.50	29	8.86
C₁₄H₁₃O₁₀	341.050323	15.67	87	15.09	100	11.68
C₁₅H₁₇O₉	341.086709	16.76	78	14.01	72	12.04
C₁₆H₂₁O₈	341.123094	17.85	32	16.75	20	13.73
C₁₇H₂₅O₇	341.156480	18.94	4	25.15	2	1.41

^a

Relative intensity to the base peak in the broadband spectrum.