APPENDIX. 



379 



AROMATIC SERIES. 



RELATION TO THE DECOMPOSITION PRODUCTS OF ALBUMIN. 



Oxyphenylacetic Acid. 

 OH 



Putrefactive product of 

 tyrosiu ; normal uri- 

 nary constituent. When 

 given to an animal, it 

 leaves the organism un- 

 changed. 



Phenylacetic Acid. 

 C 6 H 6 .CH 2 .COOH. 



Putrefactive product of 

 phenylamidopropionic 

 acid and of albumin, 

 passes into the urine as 



Phenaceturic acid. 



C 6 H 5 .CH 2 .CO.NH.CH 2 

 COOH. 



Parakresol. 



OH 



Putrefactive product of 

 tyrosin ; occurs in urine 

 as 



Indol. 

 CH = CH 



Obtained from albumin 

 by putrefaction, and 

 heating with caustic 

 potash. 



In the organism it is oxi- 

 dised to 



IndoxyL 

 C(OH)=CH 



NH' 



Passes into the urine as 



Indoxylsulphuric acid. 

 C(O.S0 3 H)=CB 



NH' 



Phenol. 

 C 6 H 6 .OH. 



Putrefactive product of 

 tyrosin ; occurs in urine 

 as 



C 6 H 5 .OS0 2 OH. 



In the organism, it is 

 partly oxidised into 



Pyrocatechin. 



OH 



which occurs as a con- 

 stituent of horses' urine, 

 partly as an ether 

 sulpho-compound, and 

 partly free. 



Skatol. 

 C(CH 3 )=-CH 



4 <( 

 N 



Putrefactive product of 

 albumin, passes into the 

 urine as 



(Skatoxylsulphuric acid). 

 C(CH 2 .O.S0 2 OH)=CH 



NH 



