Y. Hamachi, K. Nakashima, S. Akiyama
Sep 1, 1997
Citations
0
Influential Citations
3
Citations
Quality indicators
Journal
Journal of Liquid Chromatography & Related Technologies
Abstract
Abstract Ebiratide [L-methionyl-L-glutamyl-L-histidyl-L-phenyl alanyl-D-lysyl- N-(8-aminooctyl)- L- phenylalanin -amide-S, S-dioxide] is one of the synthetic analogues of ACTH4-9 for Alzheimer disease. High performance liquid chromatography with peroxyoxalate chemiluminescence detection (HPLC-PO-CL) has been examined for the analysis of this compound. The fluorogenic reaction product of ebiratide with DBD-F [4-(N,N-dimethylaminosulphonyl)-7-fluoro-2,1,3-benzoxadiazole] was detected by the chemiluminescence generated with bis(2,4,6-trichlorophenyl)oxalate (TCPO) or bis[4-nitro-2-(3,6,9-trioxadecyloxycarbonyl)phenyl]oxalate (TDPO) in the presence of hydrogen peroxide. TDPO gave about five times higher CL intensity than TCPO using 100mM hydrogen peroxide. The detection limit of DBD derivative of ebiratide was 25 fmol on column with TDPO. The HPLC-PO-CL was applied to the determination of ebiratide extracted from rat plasma by the solid phase extraction with Bond Elute C18. The method gave a good linearity ov...