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Amphetamine and Related Drugs

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The pooled sulfuric acid extracts are then<br />

adjusted to pH 10 with concentrated potassium<br />

hydroxide <strong>and</strong> potassium carbonate. Sodium<br />

chloride is also added <strong>and</strong> the mixture is<br />

extracted twice with chloroform. The filtered<br />

<strong>and</strong> pooled chloroform is then carefully<br />

evaporated after the addition of one drop of a<br />

solution of 0.5% sulfuric acid in methanol.<br />

4/27/2009 ٦٩

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