FOR EACH:

1. determine the molecular formula
2. draw a structure that is consistent with the formula
3. Mark the [M]⁺, [M+1]⁺, [M+2]⁺ peaks (if present).
4. Draw the structure of two fragment peaks

100 MS-NW-3731 80 60 m/z 43.0 44.0 53.0 54.0 55.0 56.0 57.0 67.0 70.0 99.0 100.0 peak intensity 21.8 1.2 1.2 1.6 1.9 100.0 5.0 1.4 6.1 11.4 0.75 Relative Intensity 40 20 O tutti 10 20 30 40 50 70 80 90 100 60 m/z M+ 100- M+ MS-NU-0016 80 60 - m/z 37.0 38.0 39.0 40.0 42.0 68.0 69.0 70.0 peak intensity 8.0 13.3 96.0 13.2 7.8 100.0 4.3 0.2 Relative Intensity I 40 40 20- M+1 o trittit Host 10 20 30 40 50 60 70 80 m/z