250 CREATININE. 



rate, 2(C 4 H 7 N~ 3 O.HCl)-f ZnCP, 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, OH 7 !N~ 3 0. 

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

 creatinine hydroxide, C 4 H 7 N 3 O.C 2 tF.OH, is obtained. 

 This latter compound does not combine with ethyl 

 iodide, but is decomposed by it, yielding alcohol and 

 ethylcreatinine iodide. 



