Fragment Ions

Predicted formula

Calculated mass (Da)

Observed mass (Da)

Error (mDa)

Error (ppm)

DBE

[M + H]⁺

C₃₇H₄₃N₂O₆

611.3116

611.3110

−0.6

−1.0

17.5

[M + H-NH₂C₂H₃]⁺

C₃₅H₃₈NO₆

568.2694

568.2683

−1.1

−1.9

17.5

[M + H-NH₂C₃H₆O]⁺

C₃₄H₃₅NO₅

537.2510

537.2492

−1.8

−3.4

18.0

[M + H-NH₂C₁₁H₁₅O]⁺

C₂₆H₂₆NO₅

432.1805

432.1798

−0.7

−1.6

14.5

[M + H-C₉H₁₃O]⁺

C₂₈H₃₀N₂O₅

475.2227

475.2219

−0.8

−1.7

15.0

[M + H-C₁₈H₂₁NO₄]⁺

C₁₉H₂₂NO₂

297.1732

297.1748

1.6

5.4

9.5

[M + H-C₂₆H₂₉NO₄]⁺

C₁₁H₁₄NO₂

192.1019

192.1010

−0.9

−4.7

5.5