Figure 9.
Synthesized porphyrins, H2TPP (6), H2TPFP (7), and H2BTBOP (8).
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.