Research Article
Analysis of 31 Hydrazones of Carbonyl Compounds by RRLC-UV and RRLC-MS(/MS): A Comparison of Methods
Table 3
Major fragments (
) of MS
2 spectrum formed by fragmentation of the precursor [M-H]
− ions of the hydrazones.
| Hydrazone | [M-H]− | Fragment ions of [M-H]− () | 152 | 163 | 179 | 182 | [M-H-17]− | [M-H-30]− | [M-H-31]− | [M-H-47]− | [M-H-93]− | [M-H-164]− |
| Formaldehyde | 209 | xx | xxx | xx | | | | | | | | Acetaldehyde | 223 | xx | xxx | xxx | | | X | | | | | 2,3-Butanedione | 265 | xx | | xx | | | X | | xxx | | | Acetone | 237 | xx | | xx | | | Xxx | | x | | | Acrolein | 235 | x | xxx | xx | | | Xx | | xx | | | Propionaldehyde | 237 | xx | xxx | xx | | x | Xx | | x | | | Crotonaldehyde | 249 | xxx | xx | xx | | x | | xx | xx | | | Butanone | 251 | xx | | xx | | | Xxx | | x | | | Methacrolein | 249 | xx | xxx | xx | | x | | x | xx | | | Butyraldehyde | 251 | xx | xxx | xx | | | xx | | x | | | Salicylaldehyde | 301 | x | xx | | xxx | | | | xx | x | Xx | Benzaldehyde | 285 | x | xxx | x | | | x | | xx | x | Xx | Cyclohexanone | 277 | x | | x | | | xxx | | x | | | 2- and 3-pentanone | 265 | xx | | xx | | | xxx | | x | | | Isovaleraldehyde | 265 | xx | xxx | xx | | | xx | | x | | x | Valeraldehyde | 265 | xx | xxx | xx | | | xx | | x | | x | p-Methoxyacetophenone | 329 | x | | x | | | | | xxx | | x | o-, m-, and p-tolualdehydes | 299 | x | xxx | xx | | | | | xxx | x | xx | Methyl isobutyl ketone | 279 | xx | | x | | x | xxx | | x | | | Hexaldehyde | 279 | xx | xxx | xx | | | x | | x | | x | Dimethylbenzaldehyde | 313 | | xx | x | | | | | xxx | x | xx | Heptanaldehyde | 293 | xx | xxx | xx | | x | xx | | xx | | x | Octanaldehyde | 307 | xx | xxx | xx | | | x | | x | | x | Nonanaldehyde | 321 | xx | xxx | xx | | | xx | | xx | | x | Decanaldehyde | 335 | xx | xxx | xx | | x | xx | | xx | | xx | Undecanaldehyde | 349 | xx | xxx | xx | | | xx | | xx | x | xx | Dodecanaldehyde | 363 | xx | xxx | xx | | | xx | | xx | | xx | Tridecanaldehyde | 377 | xx | xxx | x | | | xx | | xxx | x | xxx |
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Relative abundance: xxx: 100%; xx: 50%; x: ≤20%. xxx: fragment ion selected for SRM.
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