Measured Mass (m/z)

Nitrogen Rule

No. of Nitrogen(s)*

Proposed Formula

Electron Paring

Calculated Mass (m/z)

Error** (ppm)

370.0842

ON

3

C₁₆H₁₅F₃N₃O₂S⁺

[M+H]⁺

370.0832

2.7

352.0731

ON

3

C₁₆H₁₃F₃N₃OS⁺

EE

352.0726

1.4

252.0304

ON

1

C₉H₉F₃NO₂S⁺

EE

252.0301

1.2

235.0274

ON

1

C₉H₈F₃NOS^•+

OE

235.0273

0.4

234.0198

ON

1

C₉H₇F₃NOS^•+

OE

234.0195

1.3

205.0713

ON

1

C₉H₁₀F₃NO^•+

OE

205.0709

2.0

204.0634

ON

1

C₉H₉F₃NO⁺

EE

204.0631

1.5

190.0472

ON

1

C₈H₇F₃NO⁺

EE

190.0474

−1.1

136.0761

ON

1

C₈H₁₀NO⁺

EE

136.0757

2.9

119.0609

EN

2

C₇H₇N₂⁺

EE

119.0604

4.2