505 Phenazines and Phenoxazones 



999 Chlororaphine, green crystals, m.p. (in the absence of Oo) 225° 

 (dec.) (in the presence of Oo sublimes at 210°, giving a 

 yellow sublimate). 



Chlororaphine in the crystalline state is a molecular 

 compound of phenazine-1-carboxamide and its dihydro 

 derivative in the ratio of 3 : 1. 



CONHo CONHo 



:xb - cc 



H 



Charles Dufraisse, Andre Etienne and Edmond Toromanoff, 

 Compt. rend. 235 920 (1952). 



But in solution in the pH range 1.75-10.85 (particularly 

 at lower pH) chlororaphine exists largely in the semi- 

 quinone form: 



CONH2 



Carlo Cattaneo, Guido Sartori and M. Morellinl, Gazz. chim. 

 ital. 77 381 (1947). 



Pseudomonas chlororaphis 



Fritz Kogl and J. J. Postowsky, Ann. 480 280 (1930). 



1000 Pyocyanine, CjgHisNoO, dark blue needles, m.p. 133°, decom- 

 poses to 1-phenazinol on standing in light and air. 



O© 



I® 

 CHs 



Pseudomonas aeruginosa (Bacillus pyocyaneus), Cya- 



nococcus chroma spirans 



Heinz HUleman, Ber. 7 IB 46 (1938). (Structure) 



G. Farber, Sbornik Ceskoslov. Akad. Zemedelske 23 355 



(1951); Chem. Abstr. 45 9605 (1951). 



