Oenin chloride

Levy, L. F. Postemack, T. Robinson, R. Experiments on the Synthesis of the Anthocyanins. Part VIII. A synthesis of OEnin Chloride. J. Chem. Soc. 1931,2701-2715. 

Compments. The primary anthocyanins of V. vinifera grapes appear to be the monoglucoside oenin and some diglucoside. Levy el al. (1931) found a small amount of delphinidin and its 3 -methyl ester in the Fogarina (i.e., Fogaruna ) grape. The absorption curve of natural and synthetic oenin chloride (malvidin) from 420 m. to 600 m/i. and the distribution numbers in a special solvent were identical for the synthetic and natural product. The picrate consisted of only about 45% oenin— the remainder may be petunidin (delphinidin 3 -methyl ester) and delphinidin. 

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