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Substituted amphetamines, or simply amphetamines, are a class of compounds based upon the amphetamine structure; [1] it includes all derivative compounds which are formed by replacing, or substituting, one or more hydrogen atoms in the amphetamine core structure with substituents.
The reaction is used in spot tests and is also known as Chen-Kao test (or simply as Chen, Test T in UN Precursor Test Kit). The test is often used to distinguish ephedrine, pseudoephedrine, norephedrine , cathinone and methcathinone from amphetamine and methamphetamine , which do not react with Chen’s test reagent.
The reagent is typically provided in two parts: [2] [1] [3] A mixture of 2% sodium nitroprusside and 2% acetaldehyde in water (solution A) [4] A solution of 2% sodium carbonate in water (solution B) [4] Separate storage of the aldehyde and base are necessary to prevent aldol polymerisation of the aldehyde.
The setting of reasonable cutoff limits help reduce false positive results that occur from assay limitations. Because of the social and legal consequences, a positive test result must be confirmed by an alternative method, usually Gas Chromatography/Mass spectrometry.
The narcotics were estimated to be valued over $5 million. ... 1,220 packages that contained 4,587 pounds of methamphetamine worth over $5 million. ... contained 2 tons of meth disguised as fruit ...
Crystal methamphetamine (most commonly, colloquially known as "crystal meth" or "ice") and free base forms of amphetamine are sufficiently volatile substances and this allows them to be vaporized by high heat (i.e. using a lighter) and the fumes are inhaled (or "smoked") from glass paraphernalia known as base pipes (most commonly, colloquially ...
Mar. 25—Law enforcement officers found what they say was more than $1 million worth of drugs in a Fairbanks man's home when they executed a search warrant last week, according to criminal ...
Border agents seized almost $6 million worth of methamphetamine from trucks carrying shipments of produce — real and fake — into California.