4-carbethoxyhexafluorobutyryl chloride
National Institutes of Health
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The use of fast gas chromatography-mass spectrometry (FGC-MS) was investigated to improve the efficiency of analysis of urine…
Aniline, widely used as an intermediate in the synthesis of dye, is also used in the manufacture of pharmaceuticals, photographic…
Stable isotope dilution gas chromatographic-mass spectrometric (GC-MS) measurement of tricyclic antidepressants (TCA) is a useful…
Phenmetrazine is a central nervous system stimulant currently used as an anorectic agent. The drug is abused and is reported to…
Deuterium-labeled analogues are available for a variety of drugs, but the amphetamines (amphetamine and methamphetamine) have…
Ethylene glycol poisoning is a common problem and identification of ethylene glycol in serum is important for both medical and…
Recently, certain laboratories reported the presence of methamphetamine in several negative urine specimens. We have demonstrated…
Derivatives of seven commonly used sympathomimetic amines and two "designer amines" were isolated from urine, separated…
An underivatized methane chemical ionization (CI) assay for measuring amphetamines in urine was evaluated against derivatized…
An analytical procedure for methamphetamine and amphetamine has been developed using 4-carbethoxyhexafluorobutyryl chloride. This…