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.
Populated imperatorin and isoimperatorin metabolites in human liver microsomes. (A) Imperatorin or isoimperatorin gave the protonated molecule [M + H]+ at m/z 271, and the MS2 spectrum showed prominent ions at m/z 203 ([M + H − C5H8]+). (B) M1 and M3 gave [M + H]+ at m/z 203, with MS2 spectrum showed prominent ions at m/z 175 ([M + H − CO]+) and m/z 147([M + H − 2CO]+). (C) M2 and M4 gave [M + H]+ ion at m/z 287, with MS2 spectrum showed prominent ions at m/z 203([M + H − C5H8O]+).
