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.
Total ion chromatogram (TIC) and extracted ion chromatogram (EIC) of pre-concentrated culture supernatant of EcN during the isolation of ulbactin B, displaying Ybt ([M+H]+: C21H28N3O4S3+, calculated: m/z 482.1236, measured: m/z 482.1239, Δm 0.5 ppm), escherichelin ([M+H]+: C13H11N2O3S2+, calculated: m/z 307.0206, measured: m/z 307.0208, Δm 0.8 ppm) and ulbactin B ([M+H]+: C17H21N2O3S2+, calculated: m/z 365.0988, measured: m/z 365.0991, Δm −0.8 ppm).
