250 CREATININE. 



rate, 2(C 4 HWp.HCl) + ZnCl 2 , a crystalline compound, 

 easily soluble in water, from which solution creatinine, 

 zincochloride is precipitated by a concentrated solution 

 of sodium acetate. 



In contact with bases, creatinine, even at ordinary 

 temperatures, is generally converted into creatine. 

 Heated for a length of time with* barium hydroxide, it 

 is resolved into ammonia and methylhydantoine (p. 

 245), water being assimilated. By boiling with mer 

 cury oxide and water, it yields the same products as 

 creatine. 



Ethyl iodide combines directly with creatinine, 

 forming crystalline ethylcreatinine iodide, C 4 IFN 3 0. 

 C 2 H 5 I, from which, by the action of silver oxide, ethyl 

 creatinine hydroxide, C 4 H 7 ^ 3 O.C 2 IP.OH, is obtained. 

 This latter compound does not combine with ethyl 

 iodide, but is decomposed by it, yielding alcohol and 

 ethylcreatinine iodide. 



