title: Manual and automatic extraction and high-performance liquid chromatographic determination of a spicamycin derivative, KRN5500, in rat plasma.
abstract: A sensitive reliable method for the extraction, separation and quantitation of KRN5500 (I), a spicamycin derivative, from rat plasma was developed. It involves solid-phase extraction of the drug using a Bond Elut C18 cartridge and reversed-phase HPLC on a YMC-Pack ODS column with an ultraviolet detector. The intra- and inter-assay coefficients of variation by manual (n=10) and automatic (n=5) extraction were less than 9 and 13% and 6 and 8%, respectively. The limit of quantitation of each extraction procedure was 2 ng potency/ml. This extraction method may thus be considered useful for monitoring I in animals following its administration.
authors.affiliation: Pharmaceutical Development Laboratory, Kirin Brewery Co. Ltd., Maebashi-shi, Gunma, Japan.
authors.forename: E
authors.initials: E
authors.lastname: Yoshioka
authors.forename: M
authors.initials: M
authors.lastname: Morino
authors.forename: H
authors.initials: H
authors.lastname: Tanaka
authors.forename: H
authors.initials: H
authors.lastname: Shinkai
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000097:blood*; D002851:Chromatography, High Pressure Liquid; D008297:Male; D011684:Purine Nucleosides / Q000097:blood; D051381:Rats; D017207:Rats, Sprague-Dawley; D015203:Reproducibility of Results; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000903:Antibiotics, Antineoplastic; D011684:Purine Nucleosides; C092296:KRN 5500