Linked Life Data

18042443

Source:http://linkedlifedata.com/resource/pubmed/id/18042443

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2007-12-6
pubmed:abstractText
A highly sensitive and enantioselective assay has been developed and validated for the estimation of torcetrapib (TTB) enantiomers [(+)-TTB and (-)-TTB] in hamster plasma with chiral liquid chromatography coupled to tandem mass spectrometry with an atmospheric pressure chemical ionization interface in the negative-ion mode. The assay procedure involves liquid-liquid extraction of TTB enantiomers and IS (DRL-16126) from 100 microL hamster plasma with acetonitrile. TTB enantiomers were separated using n-hexane:propanol (80:20, v/v) at a flow rate of 0.7 mL/min on a Chiralpak AD column. The MS/MS ion transitions monitored were 599.2-->340.2 for TTB and 623.2-->298.1 for IS. Absolute recovery was found to be between 64 and 68% for TTB enantiomers and >100% for IS. The standard curves for TTB enantiomers were linear (r(2)>0.995) in the concentration range 5-2500 ng/mL for each enantiomer with an LLOQ of 5 ng/mL for each enantiomer. The inter- and intra-day precisions were in the range of 10.5-12.4 and 9.15-11.5% and 3.75-12.9 and 5.16-12.5% for (+)-TTB and (-)-TTB, respectively. Accuracy in the measurement of quality control (QC) samples was in the range 91.3-105 and 88.6-111% for (+)-TTB and (-)-TTB, respectively. This novel method has been applied to the study of stereoselective oral pharmacokinetics of (-)-TTB.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1570-0232
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
860
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
227-34
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Chiral bioanalysis of torcetrapib enantiomers in hamster plasma by normal-phase liquid chromatography and detection by atmospheric pressure chemical ionization tandem mass spectrometry.
pubmed:affiliation
Department of Chemistry, JNTU College of Engineering, Kukatpally, Hyderabad 500072, India.
pubmed:publicationType
Journal Article