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G005540

HPLC Analysis of Dermorphin in Horse Plasma on Ascentis® Express F5 after SPE with HybridSPE®

application for HPLC, application for SPE

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About This Item

technique(s)

HPLC: suitable
solid phase extraction (SPE): suitable

test parameters

sample preparation: SPE (Solid Phase Extraction)
sample/matrix: horse plasma spiked at 10 μg/mL
SPE tube/cartridge: [TM"HybridSPE"]-Phospholipid Plate, 50mg/96-Well (575656-U)
sample addition: 3:1, (1% formic acid in acetonitrile); plasma
column: Ascentis Express F5, 10 cm x 2.1 mm I.D., 2.7 μm particles (53569-U)
mobile phase: [A] acetonitrile [B] 20 mM ammonium formate; (90:10, A:B); pH 4.5 with formic acid, after mixing A & B
flow rate: 0.4 mL/min
pressure: 1305 psi (90 bar)
column temp.: 35 °C
detector: MS, ESI(+), TIC, m/z 100-1000
injection: 1 μL

suitability

application for HPLC
application for SPE

application(s)

forensics and toxicology

Analysis Note

Dermorphin is a natural heptapeptide opioid. Because of poor recovery from horse plasma following protein precipitation, alternate methods of extraction are sought. While the HybridSPE protocol successfully removes proteins and phospholipids, dermorphin solubility in plasma remains a limitation. Dermorphin is effectively retained on the pentafluorophenyl phase under aqueous normal phase conditions.

Legal Information

Ascentis is a registered trademark of Merck KGaA, Darmstadt, Germany
HybridSPE is a registered trademark of Merck KGaA, Darmstadt, Germany

analytical column

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