3 6 4 



PHYSIOLOGICAL CHEMISTRY 



NH 2 

 C = 

 NH 2 



UREA, CONjH 4 



CH 2 .NH 2 

 CH 2 .S0 2 OH 



o 



TAURINE, CaHrNSOj. 

 Amino-ethyl sulphonic acid. 



CO 



(CH 3 ) 3 .N 



CH 2 CH.OH CH 2 



CARNITINE, CvHisNOj. 

 y-trimethyloxybutyrobetaine. 



OH 

 (CH 3 ) 3 N 



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



NOVAINE, CTHnNOj. 



Tri-methyl di-hydroxybutyl ammonium hydroxide. 



Carnosine, 



Neosine, C 6 H 17 NO 2 . 



Ignotine, C 9 Hi 4 N 4 O 3 . 



Phosphocarnic acid, Ci Hi 7 N 3 O5 or CioHi 5 N 3 O 5 . 



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, C&HiNiO. 

 6-oxypurine. 



HN CO 



H 2 N.C C NH 



\CH 



N C N 



GUANINE, CcHiNiO. 

 2-amino-6-oxypurine. 



CH 



HN C N 



XANTHINE, 

 2-6-dioxypurine. 



= C.NH 2 



HC C NH 



i > 



. N C N 



ADENINE, CsHsNj. 

 6-aminopurine. 



i *.*. 



>CH 



EXPERIMENTS ON MUSCULAR TISSUE 



I. Experiments on "Living" Muscle 



i. Preparation of Muscle Plasma (Halliburton). Wash out the blood vessels 

 of a freshly killed rabbit with 0.9 per cent sodium chloride. This can best be 



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

 VI on Nucleic Acids. 



