G005790

LC/MS Analysis of L-Methionine Sulfoximine, Sulfone and Sulfoxide on Ascentis^® Express HILIC

application for HPLC

属性

• 技術: HPLC: suitable
• 測試參數: column: Ascentis Express HILIC, 10 cm x 3.0 mm I.D., 2.7 μm particles (53970-U); mobile phase: [A] acetonitrile; [B] water with 0.1% formic acid, pH 3.5 with ammonium formate; (75:25, A:B); flow rate: 0.4 mL/min; pressure: 1350 psi 93 bar; temp.: 25 °C; detector: MS, ESI (+), TIC, m/z 150-300; injection: 5 μL; sample: 10 μg/mL in 90:10, methanol:water
• 適合性: application for HPLC
• 應用: life science and biopharma

说明

分析報告

L-methionine sulfoximine and L-buthionine sulfoximine are used in are used to prevent additional enzyme activity in Chinese hampster ovary (CHO) cell lines with supplemental Glutamine Synthase (GS). It is of interest to be able to monitor both purity of such molecules in order to control addition to cell media as well as for the assay of parent molecules during use. The analytes are highly polar and thus should be amenable to HILIC-LC-MS analysis. This first installment investigates the ability of Ascentis Express HILIC and Ascentis Express OH5 stationary phases for the separation of the methionine analog and related compounds as well as methionine and buthionine separations.

法律資訊

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

分析物

L-Methionine sulfone
L-Methionine sulfoximine, suitable for cell culture
L-Methionine sulfoxide