phenylurethane and thioglucose (IV) and, at the same time, s 
of mustard. oil glucosides, under separation of the sulphur from 
Ee is formed again (V). 
/S: CoH | eek 
UV) CoHy-N:CC) a suet / + H:0 = CoHs-NH-CO(OC2H;) + CoH Os! 
2H : ee 
Pi ilesoutliee up at Phenylurethane. Thioglucose. hag 
(V) Phenylthiourethane-d-glucoside + H,O = C,.H,;-NH- “CS (OC: Hs) + Colas Os 
Phenylthiourethane. Glucose. 
Phenylthiourethane-d-glucoside affords, on treatment with silver nitrate, on the | 
one hand the silver salt of thioglucose, but on the other it forms again the silver salt 
of phenylthiourethane. This shows the relationship between the synthetic glucosides _ 
and natural glucosides from mustard oil, which latter are on this treatment split into : 
mustard oil silver sulphates in addition to glucose. It is noteworthy that myrosine 
has no perceptible influence on the spontaneous decomposition of phenylthiourethane- 
d-glucoside. . aa) 
The supposition, that the constitution of natural mustard oil glucosides in the — a 
sense of Gadamer’s formula is to be derived from a hypothetical iminothiolcarbonic 
acid, receives an important support through these investigations. | aa 
—————_90 <a 
SCHIMMEL Ly Co.'s s : PRINTING OFFICE, MILTITZ NEAR LEIPZIG. 
