Sensitive electron-capture GLC determination of metoclopramide in biological fluids.

Abstract:

:A highly sensitive and specific electron-capture GLC assay capable of detecting picogram quantities of metoclopramide, a procaine derivative, in biological fluids was developed. This assay consisted of extracting metoclopramide from an alkalinized aqueous layer into benzene. A portion of the organic phase was derivatized with heptafluorobutyric anhydride. Quantitative estimation of the derivative was accomplished by adding diazepam, the internal standard, in bezene (750 ng/ml). A calibration curve was prepared for the plasma extracts. Linearity was observed in the range studied (91-825 ng/ml). No interference from endogenous substances was observed. The minimum detectable amount was 1 pg/injection. The structure of the derivative was confirmed by electron-impact and chemical-ionization mass spectrometry. The applicability of this method was shown by a preliminary study of the elimination kinetics of metoclopramide in rats after a 10-mg/kg iv dose.

journal_name

J Pharm Sci

authors

Tam YK,Axelson JE

doi

10.1002/jps.2600670813

subject

Has Abstract

pub_date

1978-08-01 00:00:00

pages

1073-7

issue

8

eissn

0022-3549

issn

1520-6017

pii

S0022-3549(15)42182-3

journal_volume

67

pub_type

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