Figure 2.
HPLC-UV chromatogram obtained for product B. Retention times for vinpocetine and DL-propranolol are at 11.9 and 9.9 minutes, respectively.
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.