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    • Solubility of Uroporphyrin I in Ethyl Acetate - Nature

      Nature· 2 days ago

      ACCORDING to Waldenström, Fink and Hoerburger1, uroporphyrin I does not pass from aqueous solutions into ethyl acetate at any pH, thus differing from uroporphyrin III, which is readily extracted by ethyl acetate around pH 3.1.

    • Chlorogenic Acid of Lettuce Seeds - Nature

      Nature· 2 days ago

      THE high concentration of chlorogenic acid in lettuce seed has not previously been reported. The lettuce seed had been extracted continuously with methanol for 16 hr. in a ...

    • On The Extract of Meat - Nature

      Nature· 2 days ago

      This substance is variously called the Extract of Meat, the Juice of Flesh, Liebig's Extract, and in Latin, Extractum Carnis Liebigii ...