Pfizer Handbook of Microbial Metabolites 248 



General structure: 



O 

 CH3O 



CH3O 



512 Coenzyme Qg, C39H58O4, m.p. 16°. 



Saccharomyces cerevisiae 



513 Coenzyme Q7, C44H66O4, orange crystals, m.p. 30.5°. 



Torula utilis 



514 Coenzyme Qg, C49H74O4, orange crystals, m.p. 37°. 



Azotobacter vinelandii 



515 Coenzyme Qg, C54H82O4, orange crystals, m.p. 45.2°. 



Torula utilis 



R. L. Lester, F. L. Crane and Y. Hatefi, /. Am. Chem. Soc. 

 80 4751(1958). (Isolation) 



F. W. Heaton, J. S. Lowe and R. A. Morton, J. Chem. Soc, 

 4094 (1956). 



b. NAPHTHOQUINONES 



516 Flaviolin, CioH^Og, garnet red rhombs containing solvent of 



crystallization, m.p.: dec. near 250°. 



Aspergillus citricus (Wehmer) Mosseray 

 J. E. Davles, F. E. King and John C. Roberts, Chem,. and 

 Ind., 1110 (1954). (Structure) 



517 6-Methyl-l,4-naphthoquinone, CnHgOa, golden yellow needles, 

 m.p. 90-91°. 



O 



CH3 II 



Marasmius gramineum Lib. 



