title: Novel calibrants for accurate mass measurement in ESI-MS.
abstract: We discovered novel calibrants, several 2,2,6,6-tetraalkylpiperidinyl derivatives, for accurate mass measurements by electrospray ionization mass spectrometry (ESI). These compounds showed excellent performance as internal calibrants for the accurate mass measurement in ESI-MS, without problems arising from differences in the ionization efficiencies between the analytes and calibrants.
authors.affiliation: Environmental Health Science Laboratory, Sumitomo Chemical Co., Ltd. 3-1-98, Kasugade-naka, Konohana-ku, Osaka 554-8558, Japan.
authors.forename: Kazuko
authors.initials: K
authors.lastname: Yamashita
authors.forename: Masahiko
authors.initials: M
authors.lastname: Okamoto
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Nakai