Pfizer Handbook of Microbial Metabolites 



96 



H. F. Haas and L. D. Bushnell, /. Bacterial. 48 219 (1944). 

 (Isolation) 



R. Kuhn, E. Lederer and A. Deutsch, Hoppe-Seylers Z. 220 

 229 (1933). 



R. Kuhn and E. Lederer, Ber. 66 448 (1933). 



163 Canthaxanthin (4,4'-Dioxo-;8-carotene) C40H52O2, red crystals, 

 m.p. 218°, U.V. 480 nifx, in benzene. 



Cantharellus cinnaharinus, Cory neb acterium michi- 

 ganense 



Francis Haxo, Botan. Gaz. 112 228 (1950). (Isolation) 



S. Saperstein and M. P. Starr, Biochem. J. 57 273 (1954). 



F. J. Petracek and L. Zechmeister, Arch. Biochem. and 

 Biophys. 61 137 (1956). (Structure) 



C. K. Warren and B. C. L. Weedon, J. Chem. Soc, 3986 

 (1958). (Synthesis) 



164 a-Carotene, C40H56, deep purple prisms, m.p. 187.5° (vac), [aW^ 

 + 385° (c 0.08 in benzene), U.V. 446, 473 m^^ in light 

 petroleum ether. 



Dacromyces stillatus, Neurospora crassa (mutants), 

 Mycobacterium phlei, Phycomyces blakesleeanus, Rho- 

 dotorula rubra, Gymno sporangium juniperi-virginianae, 

 Puccinia coronifera, Aleuria aurantia, Cantharellus ci- 

 barius, Coleosporium senecionis, Penicillium sclerotiorum 



Edgar Lederer, Bull. soc. chim. hiol 20 611 (1938). 



Harry Willstaedt, Svensk. Kern. Tidskr. 49 318 (1937). 



B. L. Smits and W. J. Peterson, Science 96 210 (1942). 



J. Bonner, A. Sandoval, W. Tang and L. Zechmeister, Arch. 

 Biochem. 10 113 (1946). 



T. W. Goodwin, Biochem. J. 53 538 (1953). 



