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70 eV electron impact mass spectra of substituted pyrrolizidin-2-one derivatives

✍ Scribed by Paul F. Keusenkothen; Michael B. Smith

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 251 KB
Volume: 319
Category: Article
ISSN: 0022-2860
DOI: 10.1016/0022-2860(93)07948-v

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Table 1. The EI mass spectra, showing peaks of >5% relative abundance (RA), of compounds 1-10, using 70 eV electrons Compound m/z (% RA) 1 315(M, 55) 314(10) 161(10) 160(89) 159(13) 107(12) 106(100) 105(11) 104(9) 91(33) 77(22) 65(15) a 2 345(M, 4) 316(7) 315(19) 314(100) 190(11) 175(7) 172(5) 160(1