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.
(A) The chemical structure of humantenine. The 400 MHz 13C (B) and 1H (C) NMR spectra of humantenine. (D) The purity of humantenine as determined by HPLC. Chromatographic conditions: Sinachrom ODS-BP (250 × 4.6 mm, 5 μm particle size); mobile phase of acetonitrile: water = 50: 50; column temperature: 35 °C; injection volume: 10 μL. The retention time of humantenine was 14.091 min, and the area percent of humantenine was 99.77%.
