346 



PHYSIOLOGICAL CHEMISTRY 



metabolism (energy) in spite of the glandular activity it is known to 

 induce. 



The structural formulas of some of the nitrogenous extractives of 

 muscle are as follows: 



NH 2 



HN = C 



I 

 N.(CH 3 ).CH 2 .COOH. 



CREATINE, C4HN|O2. 



M ethyl- guanidine acetic acid. 



NH 2 



I 



C = 



NH 2 



UREA,CON 2 H4. 



CO 



HN 

 HN = C 



N.(CH 3 ).CH 2 



CREATININE, C^Hj 

 Creating anhydride. 



CH 2 .NH 2 

 CH 2 .S0 2 OH 



TAURINE, CiHiNSO*. 

 Amino-ethyl sulphonic acid. 



o 



CO 



(CH 3 ) 3 .N 



CH 2 CH.OH CH 2 



CARNITINE. CTHuNOs. 

 y-trimethyloxybutyrobetaine. 



OH 

 (CH 3 ) 3 N 



CH 2 .CH 2 .CH 2 .CH(OH) 2 



NOVAINE, CTHi7NO2. 



Tri-methyl di-hydroxybutyl ammonium hydroxide. 



Carnosine, 



Neosine, C 6 Hi 7 NO 2 . 



Ignotine, C 9 Hi 4 N40 3 . 



Phosphocarnic acid, CioHnNsOs or CioHi 6 N 3 05. 



Inosinic acid, (HO) 2 .PO.O.CH 2 (CHOH) 3 .CH:(C 5 H 3 N 4 0). 



Purine Bodies. 1 



HN CO 



HN CO 



HC C NH 



OC C NH 



CH 



N C N 



HYPOXANTHINE, CI 

 6-oxypurine. 





HN C N 



XANTHINE, 

 2-6-dioxypurine. 



1 For discussion of the purine bodies which are found as muscle extractive see Chapter 

 VI on Nucleic Acids. 



