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Amphetamine and Related Drugs

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FPN reagent<br />

Red or brown-red brown red spots are given by<br />

phenothiazines <strong>and</strong> blue spots by<br />

dibenzazepines. This reagent may be used to<br />

overspray a plate which has been previously<br />

sprayed with ninhydrin spray.<br />

FPN Reagent: mix together 5 mL of ferric<br />

chloride solution, 45 mL of a 20% w/w<br />

solution of perchloric acid, <strong>and</strong> 50 mL of a<br />

50% v/v solution of nitric acid.<br />

4/27/2009 ٩٦

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