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diethyl amine/glaucium

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Thin-layer chromatography of alkaloids on cyanopropyl bonded stationary phases. Part I.

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Selected alkaloids are chromatographed on cyanopropyl-silica thin layers using various nonaqueous and aqueous eluents. Because of the strong retention of these basic compounds, nonaqueous eluents containing medium polar diluents, strongly polar modifiers, and silanol blockers (ammonia or

TLC of alkaloids on cyanopropyl bonded stationary phases. Part II. Connection with RP18 and silica plates.

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Some standards of the alkaloids and synthetic or natural mixtures are separated by two-dimensional thin-layer chromatography (TLC) on different adsorbent layers. Normal- and reversed-phase systems are used to obtain significant differences in the separation selectivity. Optimization of the
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