455 Pyrroles, Porphyrins and Related Compounds 



Yeasts, Rliodopseudomonas spheroides, other photosyn- 

 thetic bacteria 



Hans Fischer and Hermann Fink, Z. physiol. Chem. 140 57 

 (1924). 



927 Coproporphyrin I, Cno,H3s08N4. 



HOOC— CH,— CH 



CHo— CH2— COOH 

 CH3 



CH2— CH2— COOH 



CH2— CH2— COOH 



Saccharomyces cerevisiae, S. anamensis, other yeasts, 

 Aspergillus oryzae, photosynthetic bacteria 



Hans Fischer and Hermann Fink, Z. physiol. Chem. 150 243 

 (1925). 



928 Coproporphyrin III, C36H3SO8N4, dark red crystals. 



CH2— CHo— COOH 

 CH3 



CHo— CH,— COOH 



HOOC— CHo— CHo 



CH2— CHo— COOH 



Mycobacterium tuberculosis var. hominis, Rhodopseu- 

 domonas spheroides, Corynebacterium diphtheriae 



M. O'L. Crowe and A. Walker, Brit. J. Exptl. Path. 32 1 

 (1951). 



C. M. Todd, Biochem. J. 45 386 (1949). 



