Measured Mass (m/z)

Nitrogen Rule

No. of Nitrogen(s)*

Proposed Formula

Electron Paring

Calculated Mass (m/z)

Error** (ppm)

386.0781

ON

3

C₁₆H₁₅F₃N₃O₃S⁺

[M+H]⁺

386.0781

0.0

268.0256

ON

1

C₉H₉F₃NO₃S⁺

EE

268.0250

2.2

250.0148

ON

1

C₉H₇F₃NO₂S⁺

EE

250.0144

1.6

220.0581

ON

1

C₉H₉F₃NO₂⁺

EE

220.0580

0.5

204.0636

ON

1

C₉H₉F₃NO⁺

EE

204.0631

2.5

190.0472

ON

1

C₈H₇F₃NO⁺

EE

190.0474

−1.1

152.0704

ON

1

C₈H₁₀NO₂+

EE

152.0706

−1.3

119.0605

EN

2

C₇H₇N₂⁺

EE

119.0604

0.8