SEARCH Articles Figures Tables 2- Hydroxyphenazine-1 -carboxylic acid 2-Hydroxyphenazine 2-Hydroxyphenazine-1 -carboxylate 2-Hydroxyphenazine-1 -carboxylic 2-Hydroxyphenazine-l-carboxylic acid A-Hydroxyphenazine A-Hydroxyphenazine, methylation A-Hydroxyphenazine, methylation quaternary salt Polyphenazine (PPh) and Poly(l-Hydroxyphenazine) (PPhOH)