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Merck
CN
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文件

G005375

HPLC Analysis of 25-Dihydroxyvitamin D2, 25-Hydroxyvitamin D3 and 3-epi-25-Hydroxyvitamin D3 on Ascentis® Express F5, 20 °C

application for HPLC

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About This Item

技术

HPLC: suitable

试验参数

column: Ascentis Express F5, 10 cm x 2.1 mm I.D., 2.7 μm particles (53569-U)
mobile phase: [A] 7 mM ammonium formate; [B] methanol (25:75)
flow rate: 0.4 mL/min
pressure: 5221 psi (245 bar)
column temp.: 20 °C
detector: (UV, 265 nm, ESI(+), m/z 100 - 1000)
injection: 1 μL
sample: 300 mg/L in 25:75, water:methanol

适用性

application for HPLC

应用

clinical
vitamins, nutraceuticals, and natural products

法律信息

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

分析物

说明
    25-Hydroxyvitamin D2 solution, 50 μg/mL in ethanol, ampule of 1 mL, certified reference material, Cerilliant®
    25-Hydroxyvitamin D3 solution, 5 μg/mL in ethanol, ampule of 1 mL, certified reference material, Cerilliant®
    3-epi-25-Hydroxyvitamin D3, 98% (CP)

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