Uric Acid, and their derivatives. 



thus directly explaining the relation to para ban, and produ 

 therefrom by coalescence of two molecules with eliminati( 

 an atom of oxygen (or from a molecule each of oxaluric 

 and paraban, with removal of an atom of oxygen and a i 

 cule of water). 



Tlie union of hydantoine with allanturic acid, with se 

 tion of water, gives for allituric acid, C JI,'N,0,, the for 

 No. 1, 



1. Allituric acid (monobasic). 2. Leucoturic acid (monobasic). 



u u 



U iJ 



11 ik 



u u 



I I 



i :i 



I hJ-h 



I H-i 



and the like union of paraban and allanturic acid leads to No. 

 2 for leucoturic acid of Schlieper, C,H,N,0,. This last for- 

 mula explains the possibility at least of a difterence between 

 leucoturic acid and oxalantine, the identity of which does not 

 seem clearly established. 



In each "of the last two cases we have one ureic residue 

 inverted as regards its mode of attachment to the acid nucleus 

 when the coalescence takes place. 



Two molecules of (dibasic) barbituric acid unite with sepa- 

 ration of a molecule of water, giving rise to di-barbitunc acid, 

 ^836^4 06) with unchanged basicity, 



1. Di-barbituric acid (dibasic). 2. Hydurilic acid (dibasic). 



H ....0_ HO OH ....0_ 



G-C-6 C-A-G c-c-d c-c-c 



OiNNio 0:ifNOO 



II I \ . 



Ah h h 



Y^ile the union of a molecule of barbituric acid and [one of 

 aialuric acid •^\\h i»ver>^ion of the ureic residue of the latter 

 and elimination of a mdecule of water, gives us hydurilic acid, 

 ^«H«N,0^,(No. 2). 



