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.
The proposed mechanism for reversible, pH dependent ring opening of TPT from its lactone, L, to carboxylate, CCOO-, form. Because ring opening proceeds through the carboxylic acid species, CCOOH, ring opening increases as more carboxylate is formed at higher pH, as governed by the acid dissociation constant for the E-ring carboxylic acid, KCOOH.
