Abstract:Die in unserer letzten Abhandlungl) ausgesprochene Auffassung. dass das von uns synthetisierte 6, 7-Dimeth~l-9-[d, 1'-ribityll-isoallosazin mit Lactoflavin bzw. dessen Hauptanteil wahrscheinlich identisch ist, hat sich durch die weitere chemisch-phpikalische untl biologische Untersuchung bestatigt. Durch wiederholtes Umkrystallisieren des synthetischen Praparates konnten die geringfiigigen Schmelzpunktsdifferenzen von 1 bis 2 O, die fruher noch bestanden hatten, behoben werden, nnd die ausgezeichnete TI-irksam… Show more
“…7 The vitamin-G complex as used here refers to the combination of the filtrate factor and riboflavin. Riboflavin was formerly known as "lactoflavin" or "vitamin B2" (Euler, et al, 1935); Kuhn, Gyorgy, and Wagner-Jauregg 1933) or as "vitamin G" (Sherman and Smith, 1931). The filtrate factor is identical witl; the "vitamin B," of Elvehjem and Koehn (1935) and the "chick antipellagric factor" of Ringrose, Norris, and Heuser (1931).…”
Lepkovsky, et at: Riboflavin and the Filtrate Factor 561 polished rice, and soybean oil used in these rations were products of commerce. The extracted sardine meal was a special product extracted with a hydrocarbon solvent. The special salt was sodium chloride plus 0.010 per cent iron as ferrous sulfate and 0.001 per cent copper as copper sulfate. These rations were supplemented as detailed in table 2. Preparation of S•upplements.-The 1935-36 r'iboflavin fuller's-earth adsorbate was prepared by shaking "They with fuller's earth. It was TABLE 1
“…7 The vitamin-G complex as used here refers to the combination of the filtrate factor and riboflavin. Riboflavin was formerly known as "lactoflavin" or "vitamin B2" (Euler, et al, 1935); Kuhn, Gyorgy, and Wagner-Jauregg 1933) or as "vitamin G" (Sherman and Smith, 1931). The filtrate factor is identical witl; the "vitamin B," of Elvehjem and Koehn (1935) and the "chick antipellagric factor" of Ringrose, Norris, and Heuser (1931).…”
Lepkovsky, et at: Riboflavin and the Filtrate Factor 561 polished rice, and soybean oil used in these rations were products of commerce. The extracted sardine meal was a special product extracted with a hydrocarbon solvent. The special salt was sodium chloride plus 0.010 per cent iron as ferrous sulfate and 0.001 per cent copper as copper sulfate. These rations were supplemented as detailed in table 2. Preparation of S•upplements.-The 1935-36 r'iboflavin fuller's-earth adsorbate was prepared by shaking "They with fuller's earth. It was TABLE 1
“…Several 1-sugar-substituted 2-hydroxybenzimidazoles have been obtained as by-products in the synthesis of flavins. These compounds were obtained by ring closure of JV-sugar-substituted '-carbalkoxy-o-phenylenediamines (194,402,403,404).…”
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