491 



Pyridines 



975 Diphosphopyridinenuclcotide (DPN), C2iH^,70,4N7P^.. 

 NH, 



c.r.> 



OH OH 



Yeasts, molds (widely distributed) 



H. von Euler, P. Karrer and B. Brecker, Helv. Chim. Acta 

 19 1060 (1936). (Structure) 



G. A. LePage, /. Biol. Chem. 168 623 (1947). 



976 Triphosphopyridinenucleotide (TPN, Codehydrase II), C.>iH<,g- 

 OitNtPs. 



NH, 



OH 



O© 



^V CHo— O— P— O— P— O— CM 



oh\ II II 



^^ O o 



OH OH 



Yeasts, molds, etc. 



Otto Warburg, Walter Christian and Alfred Griese, 

 Biochem. Z. 279 143 (1935); 282 157 (1935). (Isolation) 



