Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mass chromatograms of methylpiperazine (MPPZ) derivatives of estrogens and their metabolites following analysis of an extracted solution of Standards, 2000 pg mL-1. Total Ion Chromatograms and the corresponding extracted ion chromatograms showing resolution of derivatives of estrone (El), estradiol (17α & 17βE2), 16- hydroxyestrogens (16OHE1 & 16OHE2) and methoxyestrogens (2MeOEl, 4MeOEl, 2MeOE2 & 4MeOE2) by retention time and mass transition.
