JMSSJ On-line

JMSSJ On-line, Vol. 43 (1995) No. 1, pp. 19-26

Continuous-Flow Fast Atom Bombardment Mass Spectrometry of Acetylcholine: Interpretation of Mass Spectral Fragmentation		>> Full Text PDF >> References
*Hirohisa ISHIMARU,^a) Yasushi IKARASHI,^a) Yuji MARUYAMA,^a) and Susan T. WEINTRAUB^b)** ^a) Department of Neuropsychopharmacology (Tsumura), Gunma University, School of Medicine (3-39-22 Showa-machi, Maebashi-shi, Gunma 371, Japan)* ^b) Department of Pathology, The University of Texas Health Science Center at San Antonio (San Antonio, Texas 78284-7750, U.S.A.)

The use of stable isotope analogs and accurate mass analysis has permitted elucidation of the continuous-flow fast atom bombardment mass spectral fragmentation of the neurotransmitter, acetylcholine. These studies showed that the major fragmentation pathway involved loss of trimethylamine from the intact molecular cation and that formation of an ion at m/z 58 proceeded through two different routes. Losses of acetic acid and ketene were observed in addition to the generation of cationized trimethylamine.

Key words: Fast atom bombardment mass spectrometry, CF-FABMS, Acetylcholine, Fragmentation