Following the research work on mass spectra of thiophenic compounds,'-' we report here the electron impact mass spectra at 70eV of some 2-and 4-substituted thiophene-3-carboxylic acids (1-23) with the aim of comparing the fragmentations observed with those of the corresponding 3-substituted thiophen
The mass spectra of some 2- and 4-pyridylethylamines
โ Scribed by W. Czuba; K. Rutkowski; P. Kowalski
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- English
- Weight
- 228 KB
- Volume
- 13
- Category
- Article
- ISSN
- 1076-5174
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## Mass spectra of %me /1(~-Pyridazinone Derivatives Recently, the preparation of several isoquinolinium pyridazinone derivatives (1,2) was reported.' We wish to report here the highly characteristic mass spectra of these compounds and to compare the spectra of l a and l b with 3 which constitutes