Metabolism and measurement of chloroprocaine, an ester-type local anesthetic.

Abstract:

:Blood levels of intact chloroprocaine were determined using a GLC procedure capable of detecting as little as 10 ng of chloroprocaine/ml of blood. It was necessary to detective plasma cholinesterases in collected samples by adding echothiophate iodide to blood sampling tubes. An extraction procedure, followed by a TLC separation and spectrodensitometric assay, was developed for measurement of the metabolite 2-chloro-4-aminobenzoic acid in plasma and urine. With these procedures, data were obtained showing that chloroprocaine is hydrolyzed rapidly by plasma cholinesterases. No unchanged drug could be detected in any blood samples obtained from volunteers who received chloroprocaine by intravenous infusion or from obstetric patients who had epidural anesthesia during labor and delivery. Blood levels of 2-chloro-4-amino-benzoic acid rose promptly with the administration of chloroprocaine and declined rapidly after drug administration. Most of the metabolite was recovered in urine.

journal_name

J Pharm Sci

authors

O'Brien JE,Abbey V,Hinsvark O,Perel J,Finster M

doi

10.1002/jps.2600680123

subject

Has Abstract

pub_date

1979-01-01 00:00:00

pages

75-8

issue

1

eissn

0022-3549

issn

1520-6017

pii

S0022-3549(15)42420-7

journal_volume

68

pub_type

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