Fig. 2. Selected ion recording chromatogram of precursor ion and the product ion spectrum of (A) trigonelline, (B) 1-methylnicotinamide, (C) 1-methyl-4-pyridone-5-carboxamide (4PY), and (D) 1-methyl-2-pridone-5-carboxamide (2PY).
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.