title: Medium- and long-chain 3-hydroxymonocarboxylic acids: analysis by gas chromatography combined with mass spectrometry.
abstract: Medium- and long-chain 3-hydroxymonocarboxylic acids represent intermediates in the beta-oxidation of fatty acids: they accumulate in the plasma of patients with an inherited deficiency of long-chain 3-hydroxyacylcoenzyme A dehydrogenase. 3-Hydroxy acids with chain lengths varying from 6 to 16 were synthesized by a Reformatzky reaction. Capillary gas chromatography of the pertrimethylsilyl derivatives was performed on a CP-Sil 19 CB column, coupled to a quadrupole mass spectrometer in the electron impact mode. Calculation of the retention indices showed that the separation of the 3-hydroxy acids from the homologous straight-chain fatty acids may be troublesome, stressing the need for mass spectrometric identification.
authors.affiliation: University Children's Hospital, Het Wilhelmina Kinderziekenhuis, Utrecht, The Netherlands.
authors.forename: L
authors.initials: L
authors.lastname: Dorland
authors.forename: D
authors.initials: D
authors.lastname: Ketting
authors.forename: L
authors.initials: L
authors.lastname: Bruinvis
authors.forename: M
authors.initials: M
authors.lastname: Duran
mesh_terms: D002264:Carboxylic Acids / Q000032:analysis* / Q000378:metabolism; D005227:Fatty Acids / Q000378:metabolism; D008401:Gas Chromatography-Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D010949:Plasma / Q000737:chemistry
chemical_list: D002264:Carboxylic Acids; D005227:Fatty Acids