Selective Method for an Opiate like Peptide
In this AppNote, the developed Method was used to analyze Methionine-Enkephalin (MEK), the resulting Peak shape was Symmetrical. and the Retention time was more than adequate. In addition to the intact peptide, the Gradient method was also designed to analyze its metabolites and enzyme inhibitors.
This Gradient Method with MS detection is Selective for MEK Determination with detection limits in the Pico mole range.
Met-Enkephalin: Tyr-Gly-Gly-Phe-Met, 574.66 m/z
Column: Cogent Diamond Hydride™, 4μm, 100Å
Catalog No.: 70000-15P-2
Dimensions: 2.1 x 150mm
—A: DI Water with 0.1% Formic Acid (v/v)
—B: Acetonitrile with 0.1% Formic Acid (v/v)
Post Time: 3 minutes
Injection vol.: 2μL
Flow rate: 0.4mL / minute
Detection: LC–ESI/MS was performed using a Thermo Finnigan SpectraSystem HPLC
t0: 0.9 minutes
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