brucine/dichloromethane

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Determination of strychnine and brucine in rat plasma using liquid chromatography electrospray ionization mass spectrometry.

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A simple, sensitive and selective liquid chromatography-electrospray mass spectrometric (LC-ESI-MS) method was developed and validated for simultaneous determination of strychnine and brucine in rat plasma, using tacrine as the internal standard (IS). Sample preparation involved a liquid-liquid

[HPLC determination of strychnine and brucine in Semen Strychni and its processed products].

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OBJECTIVE This paper reports a HPLC method for determinition of strychnine and brucine in Semen Strychni and its processed products of Jiangxi method and innovated methed. METHODS SiO2 was used as the stationary phase, n-hexane-dichloromethane-methanol-ammonia(47.5:47.5:5:0.35) as the mobile phase,

Preparative separation and purification of two highly polar alkaloids derived from Semen Strychni extracted with dichloromethane by high-speed countercurrent chromatography.

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Brucine chloromethochloride and strychnine chloromethochloride, the two chloromethochloride derivatives formed during the extraction of Semen Strychni in which dichloromethane was used as the extracting solvent, were isolated and purified by high-speed countercurrent chromatography for the first

Conditional rotations of heteronuclear coupled spins.

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We present a new pulse sequence that conditionally excites I spin magnetization only in the presence of a nonzero heteronuclear coupling to an S spin. The pulse sequence, referred to as the reverse INEPT pathway selective pulse or RIPSP, generates a pure I spin rotation by an angle that depends upon

In-vivo and In-vitro activities of medicinal plants on ecto, endo and haemoparasitic infections: a review.

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Crude methanol, pet. ether, ethyl acetate, n-hexane, dichloromethane and aqueous extracts of various species of medicinal plants have shown significant in-vivo and in-vitro pharmacological activities against ecto, endo and haemoparasites. The scientific evaluations of the use of the plants as

Antioxidant, Cytotoxicity, and Antiophidian Potential of Alstonia macrophylla Bark.

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The objective of this research was to find the possible pharmacognosy of the bark of the Philippine Alstonia macrophylla Wall. ex G.Don (AM). Gas chromatographic-mass spectral (GC-EI-MS) characterization and energy dispersive X-ray spectroscopy (EDX) were performed to detect the bioactive

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Herbal & Natural Medicine

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