Abstract
Electron ionization mass spectra of bis-(3-methyl-; 3-undecyl- and 3-pentadecyl-6,8-dimethoxyisochroman-5-yl)methanes (2a-c) and 3-(methyl, undecyl and pentadecyl)-6,8-dimethoxysochromans (1a-c) are studied with the help of LREIMS. The molecular formulae Of these compounds are further confirmed by HREIMS peak matching of molecular ion peaks exhibited by EIMS.