Phenazine ACE inhibitor produced from streptomyces species
 3,6-Dihydroxyphenazine-1-carboxylic acid, a hypotensive agent, and its production by culturing aerobically Streptomyces species A.T.C.C. No. 39460 are disclosed herein. 
E. R. Squibb & Sons, Inc.
C C
C07D C12P
inventional inventional
Karen Dorothy S. Wen-Chih
Bush Slusarchyk Liu