Which of the following compounds would present a molecular ion peak at m/z = 107? HN N N N NH₂

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14.

### Analyzing Molecular Ion Peaks in Mass Spectrometry

#### Question:
Which of the following compounds would present a molecular ion peak at m/z = 107?

#### Options:

1. ![First Compound](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQIW2P8z/C/HwMDA8NiKx2NB0AyMAMKUDvnPSkBNzUQ0KwAAAABJRU5ErkJggg==)
   - Structure: Contains a pyridine ring with a -NH group and one -CH group attached.
   
2. ![Second Compound](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQIW2P8z/C/HwMDA8NiKx2NB0AyMAMKUDvnPSkBNzUQ0KwAAAABJRU5ErkJggg==)
   - Structure: Contains a pyridine ring with an amino group (-NH2) and an -CH3 group attached.
   
3. ![Third Compound](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQIW2P8z/C/HwMDA8NiKx2NB0AyMAMKUDvnPSkBNzUQ0KwAAAABJRU5ErkJggg==)
   - Structure: Contains a pyridine ring with two -CH3 groups attached.
   
4. ![Fourth Compound](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQIW2P8z/C/HwMDA8NiKx2NB0AyMAMKUDvnPSkBNzUQ0KwAAAABJRU5ErkJggg==)
   - Structure: Contains a pyrimidine ring with two -CH3 groups attached.

When approaching this question, consider that the molecular weight of these compounds determines their m/z values (molecular ion peaks). To find the correct answer, calculate the molecular weight of each compound.

Note: The detailed structures depict different substitutions on aromatic
Transcribed Image Text:### Analyzing Molecular Ion Peaks in Mass Spectrometry #### Question: Which of the following compounds would present a molecular ion peak at m/z = 107? #### Options: 1. ![First Compound](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQIW2P8z/C/HwMDA8NiKx2NB0AyMAMKUDvnPSkBNzUQ0KwAAAABJRU5ErkJggg==) - Structure: Contains a pyridine ring with a -NH group and one -CH group attached. 2. ![Second Compound](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQIW2P8z/C/HwMDA8NiKx2NB0AyMAMKUDvnPSkBNzUQ0KwAAAABJRU5ErkJggg==) - Structure: Contains a pyridine ring with an amino group (-NH2) and an -CH3 group attached. 3. ![Third Compound](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQIW2P8z/C/HwMDA8NiKx2NB0AyMAMKUDvnPSkBNzUQ0KwAAAABJRU5ErkJggg==) - Structure: Contains a pyridine ring with two -CH3 groups attached. 4. ![Fourth Compound](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQIW2P8z/C/HwMDA8NiKx2NB0AyMAMKUDvnPSkBNzUQ0KwAAAABJRU5ErkJggg==) - Structure: Contains a pyrimidine ring with two -CH3 groups attached. When approaching this question, consider that the molecular weight of these compounds determines their m/z values (molecular ion peaks). To find the correct answer, calculate the molecular weight of each compound. Note: The detailed structures depict different substitutions on aromatic
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