TY - JOUR
T1 - Isomer differentiation in 7, 12-dimethylbenz[a]anthracene-pyridine adducts by fast atom bombardment tandem mass spectrometry
AU - Dolnikowski, G. G.
AU - Gross, M. L.
AU - Cavalieri, E. L.
PY - 1991/5
Y1 - 1991/5
N2 - Three isomeric 7,12-dL-nethylbenz[α]anthracene-pyridine adduct salts, namely.. the 5-N-pyridinium-7,12-dimethylbenz[α]anthracene perchlorate, the 7-N-pyridiniummethylene-12methylbenz[ α]anthracene picrate, and the 7-methyl-12-N-pyridiniummethylenebenz[ α]anthracene picrate, were studied by fast atom bombardment tandem mass spectrometry using high energy collisional-activated dissociation (CAD). The CAD mass spectra of the molecular cations and the (M - pyridine)+ ions allow one to distinguish positional isomers on the basis of daughter ion peak height ratios. The differences in the CAD mass spectra of the (M - pyridine)+ ions are probably due in part to formation of isomer-specific fused-ring tropyliumions.
AB - Three isomeric 7,12-dL-nethylbenz[α]anthracene-pyridine adduct salts, namely.. the 5-N-pyridinium-7,12-dimethylbenz[α]anthracene perchlorate, the 7-N-pyridiniummethylene-12methylbenz[ α]anthracene picrate, and the 7-methyl-12-N-pyridiniummethylenebenz[ α]anthracene picrate, were studied by fast atom bombardment tandem mass spectrometry using high energy collisional-activated dissociation (CAD). The CAD mass spectra of the molecular cations and the (M - pyridine)+ ions allow one to distinguish positional isomers on the basis of daughter ion peak height ratios. The differences in the CAD mass spectra of the (M - pyridine)+ ions are probably due in part to formation of isomer-specific fused-ring tropyliumions.
UR - http://www.scopus.com/inward/record.url?scp=0012014098&partnerID=8YFLogxK
U2 - 10.1016/1044-0305(91)80053-A
DO - 10.1016/1044-0305(91)80053-A
M3 - Article
AN - SCOPUS:0012014098
SN - 1044-0305
VL - 2
SP - 256
EP - 258
JO - Journal of the American Society for Mass Spectrometry
JF - Journal of the American Society for Mass Spectrometry
IS - 3
ER -