7 
+ PAS eal 1% 
ee ‘ 
sa —— 
7 
98 REPORT OF SCHIMMEL & Co. APRIL 1914. — 
shipments from Réunion amounted in 1913 to about 1891 kilos, compared with about — 
1421 kilos in the year 1912. The fact that, in spite of this increase in the output, the — 
price was maintained at about 75.— /fcs. instead of dropping back to somewhere near 
its old level of 30.— fcs., proves, we should say, that-the value is kept up artificially, 
for in our opinion it is hardly probable that there has been any increase in the con- 
sumption. 
Oil of Wallflower Seed. W. Schneider’), in collaboration with A. Schtitz, has 
continued his researches into the glucoside of cheiroline, the isosulphocyanate of 
wallflower seed’). In the course of these he has been successful in preparing the 
glucoside, called glucocheiroline, in a chemically pure form. This body constitutes 
small, very slightly hygroscopic needles, m.p. 158 to 160°, possessing the chemical 
formula Cy;HeO1NS3K + H,O, and consequently is a complete analogue of sinigrin. 
Exactly like the last-named it is readily split up by the enzyme myrosine, affording 
cheiroline; when boiled in a hydrochloric acid solution with barium chloride it gradually 
splits off quantitatively one molecule of sulphuric acid; with silver nitrate in aqueous 
solution it affords a silver compound analogous with sulphocyanate-silver sulphate: 
cheiroline silver sulphate, of which the constitution is C;H»O2NSe, AgeSO. 4- H2O. 
One molecule of d-glucose is split off during the reaction. This silver compound, 
when boiled with aqueous solutions of chlorides, readily affords cheiroline. Basing 
themselves upon these reactions, Schneider and Schiitz assign to cheiroline a similar 
constitution to that which Gadamer had made probable for sinigrin; a composition 
7s CoA Os | 
\O-SO:-OK 
With the object of obtaining the glucoside, the authors extract wallflower seed 
from which the fatty constituents have been removed, with alcohol, the impurities being 
abstracted from the alcoholic solution by careful treatment with lead oxide and lead 
acetate. Glucocheiroline dissolves very readily in water, but only traces of it can be 
dissolved in hot absolute alcohol. Optically it is lavorotatory: [@]po270 — 21,09 to 
— 21,56° in aqueous solution. The water of crystallisation adheres most persistently 
and only disappears after several days’ heating in vacuo at 15 mm. over phosphorus 
pentoxide to 98°. 
In contradistinction to sinigrin, which is bitter, glucocheiroline is quite tasteless. 
which may represented by the formula CH;-SO.-CH2-CH2:CHe-N: C 
Wintergreen Oil. The prices have now been stable for a long time, and so far 
as it is possible to form a judgment from the reports of our New York branch house, 
no alterations are to be expected. 
We learn from an English periodical*) that the Bureau of Chemistry of the United 
States has discovered a method which is said to enable it to detect the addition of 
synthetically manufactured methy! salicylate in the natural product. Up tothe present 
no particulars whatever of the test have been published, as the applicability of the 
method in practice is still being tested. : 
In the same journal*) the following colour test is published for the detection of 
the addition of synthetic methyl salicylate to natural wintergreen oil: to five drops of 
the oil in a test tube add five drops of a 5 p.c. alcoholic solution of vanillin and 1 cc. 
1) Berl. Berichte 46 (1913), 2634. —- 2) Comp. Report April 1918, 107. — %) Perfum. Record 5 (1914), 4. — 
*) Ibidem 60. ... 
