Figure 12.
Chemical structures of RUC-1 (31), RUC-2 (32), RUC-4 (33).
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.