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.
MALDI-TOF/TOF-MS of m/z 525.030 that is observed in the MALDI-TOF-MS spectrum of Figure 4A (where the sample tested was an eluate of a urine-exposed PEP). This accurate mass fits both a sulfate, glucuronide conjugate of apigenin and genistein (exact mass 525.034), as does the fragmentation pattern seen here. For illustration purposes, the structure of apigenin-7-sulfate-4′-glucuronide is shown.
