The Determination of Protoveratrine
β Scribed by Levine, Joseph ;Fischbach, Henry
- Publisher
- Elsevier
- Year
- 1955
- Weight
- 441 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0095-9553
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
unserem synthetischen 14C-Produkt scheint das aber nicht der Pall zu sein. Each Lnngdon & Bloch') wird mit 14C markiertes naturliches Squalen, das biologisch aus 14C-haltigem Acetat dergestellt wurde, in der Maus weitgehend in 14C-haltiges Cholesterol ubergefuhrt'; dies konnte noch mit nur 20800 c.p
Mixtures of reserpine and other drugs can be resolved by thin-layer chromatography on silica gel, following extraction from single tablets with chloroform. Quantitation is accomplished by visual inspection, and is accurate to within 10 per cent. H E PLTRPOSE of this investigation was to pro-Tvide a
protoverine 3-isobutyrate 6,7,16-triacetate 15-nicotinate (XVI) in 57 ml. of methanol was allowed to stand at room temperature for 16 hours. Evaporation to dryness left a resin which resisted attempts a t purification by column chromatography, but which yielded to preparative paper chromatography. T