547 



Purkies 



1045 Diadenosinctetraphosphate, C2„H^.„0i.,Ni„P, [a]r,44o"" —39.2° (in 

 N sulfuric acid). 



NH; 



OH OH OH 



I I I 



0=P— O— P— O— P— O— CH 



I II II 



OH O O 



-I '2 



OH 



-O— P— O— CH 



OH 



OH OH 



Yeast 



W. Kiessling and O. Meyerhof, Natunvissenschaften 26 13 

 (1938). 



1046 Coenzyme A, C^iHaeOjcN-SPa, white amorphous powder. 



NHo 





Occurs widely in microorganisms and higher animals. 

 Yeast and certain streptomycetes were early sources. 



F. M. Strong, "Squibb Lectures on the Chemistry of Mi- 

 crobial Products," Coenzyme A and related compounds, John 

 Wiley and Sons, Inc., New York, 1956, pp. 44-98. (This re- 

 view lists 117 earlier references.) 



