SUBJECTS brucine

Strychnine and brucine have been the subject of a very large number of degradative researches, nearly all of them before the advent of modern spectroscopic techniques, and the elucidation of their structure represents one of the major achievements of classical organic chemistry. The... 

Denatured alcohol is ethanol rendered unfit for drinking or internal medicinal use by the addition of a small fraction of some malodorous or obnoxious substance. Once denatured, ethanol is no longer subject to beverage tax although it is still widely acceptable commercially as a solvent, raw material, fuel, fluid, etc. The most effective denaturants have a boiling point sufficiently close to that of ethanol to make separation by distillation difficult. They include methanol, brucine, brucine sulphate, quassin, n-butanol, petroleum, and wood distillates. Methylated spirits and industrial alcohol are used synonymously with denatured alcohol although the first specifically applies to those alcohols denatured by methanol (67-56-1) while the latter may have been denatured only by dilution with water. 

Measurements of nitrate in soils and waste waters using the TOAN-DBP electrode and the brucine method agreed closely. All these nitrate ISEs (66,67) are subject to serious interference from iodide, chlorate and perchlorate. This feature can in turn be exploited, e.g., the Corning nitrate exchanger may be readily converted to a viable chlorate-sensing cocktail using an extraction technique as described for the uranyl phosphate sensor (section 3.2.10). 

Good quality nux vomica (the dried ripe seeds of Strychnos mix vomica Linn.) usually yields from 2 5 to 3-0 per cent of total alkaloids, about one half of which is strychnine and the rest mainly brucine, although the proportion is subject to some variation (the ratio of strychnine to brucine is generally between the limits of 1 1 to 1 1 2). 

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