DIGITALIN 625 



Digitalin with no other specification is a vague term, and should 

 be avoided in the literature and in practice in order to eliminate a 

 source of error and of confusion. The same applies to digitalinum 

 and digitaline. 



Digitalin, amorphous. This designation is probably chiefly 

 intended to cover digitalinum Gallicum (digitaline chloroformique) 

 of the French pharmacopoeias of 1866 and 1895, a substance which is 

 completely soluble in chloroform. But it must be remembered that 

 digitalinum verum and digitalinum Germanicum are also amorphous. 



FIG. 277. Digitoxin: sphere-crystals from an alcoholic solution. 



Digitalin (um) crystallisatum has so far been used as a synony- 

 mous term for digitonin. As this is misleading it would be better 

 to avoid its use altogether. In commerce, however, names which 

 have once been introduced are difficult to get rid of. 



Digitalin Homolle is a mixture of glucosides and their products 

 of decomposition, contained in digitalis leaves, and is practically 

 insoluble in water. 



Digitalin Homolle-Quevenne is the constituent of digitalin 

 Homolle which is insoluble in a mixture of alcohol and ether. 



Digitalin Kiliani is identical with digitalinum verum. 



Digitalin Nativelle is a crystalline product prepared from digitalis 

 leaves, which is probably not unlike digitoxin in constitution. Ac- 



