503 Phenazines and Phenoxazqnes 



Atmospheric oxidation is enough to cause phenazine 

 formation from 3,4-diaminoguaiacol.'' This is a favor- 

 able case for free radical stabilization. 



^^"^NH.- HO ?^"^ ?^"^NH. 



\ ^ .M^ O. 



NHo NH, NH2 



This argument of course is speculative. 



994 1-Phenazinol (1-Hydroxyphenazine, Hemipyocyanine ) , Cj^Hg- 

 ON2, orange crystals, m.p. 157° (sublimes). 



OH 





Pseudomonas aeruginosa 



Fritz Wrede and E. Strack, Z. physiol. Chem. 177 177 

 (1928). 



G. M. Badger, R. S. Pearce and R. Pettit, /. Chem. Soc. 

 3204 (1951). 



Walter S. Moos and John W. Rowen, Arch. Biochem. and 

 Biophijs. 43 88 (1953). 



995 1,6-Dihydroxyphenazine, CioH^OmN:,, golden yellow prisms, m.p. 

 274°. 



OH 



I 

 HO 



Streptomyces thioluteus 



Hideshi Akabori and Michikazu Nakamura, /. Antibiotics 

 (Japan) 12A 17 (1959). 



<^Fr. Fichter and Julius Schwab, Ber. 39 3339 (1906). 



