| Literature DB >> 8450012 |
C Imaz1, D Carreras, R Navajas, C Rodriguez, A F Rodriguez, J Maynar, R Cortes.
Abstract
An improved high-performance liquid chromatographic method with ultraviolet detection for the simultaneous determination of norephedrine, norpseudoephedrine, ephedrine, pseudoephedrine, methylephedrine and ethylephedrine in urine is described. The six substances were separated on a reversed-phase column with phosphate buffer-triethylamine (pH 5.5) as the mobile phase. The linearity and reproducibility were satisfactory for the levels usually found in urine (1-30 micrograms/ml).Entities:
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Year: 1993 PMID： 8450012 DOI： 10.1016/0021-9673(93)80522-a
Source DB: PubMed Journal: J Chromatogr