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LC/MS/MS Analysis of Steroids on Ascentis® Express C18

LC/MS/MS Analysis of Steroids on Ascentis® Express C18 application for LC-MS

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Ascentis® Express C18, 2.7 μm HPLC 色谱柱

L × I.D. 5 cm × 2.1 mm, pk of 1 ea

雄烯二酮标准液 溶液

1.0 mg/mL in acetonitrile, ampule of 1 mL, certified reference material, Cerilliant®

11-脱氧皮质激素标准液 溶液

1.0 mg/mL in methanol, ampule of 1 mL, certified reference material, Cerilliant®

21-脱氧皮质激素标准液 溶液

100 μg/mL in methanol, ampule of 1 mL, certified reference material, Cerilliant®

脱氢表雄酮(DHEA)标准液 溶液

1.0 mg/mL in methanol, ampule of 1 mL, certified reference material, Cerilliant®

5α-二氢睾酮(DHT)标准液 溶液

1.0 mg/mL in methanol, ampule of 1 mL, certified reference material, Cerilliant®

6β-羟基睾丸激素 溶液

100 μg/mL in methanol, ampule of 1 mL, certified reference material, Cerilliant®

17α-羟孕酮标准液 溶液

1.0 mg/mL in methanol, ampule of 1 mL, certified reference material, Cerilliant®

17α-Methyltestosterone solution

1.0 mg/mL in 1,2-dimethoxyethane, ampule of 1 mL, certified reference material, Cerilliant®

睾酮 溶液

1.0 mg/mL in acetonitrile, ampule of 1 mL, certified reference material, Cerilliant®

CONDITIONS

column

Ascentis Express C18, 5 cm x 2.1 mm I.D., 2.7 μm particles (53822-U)

mobile phase

[A] 0.1% formic acid in water ; [B] methanol

gradient

5%B to 70%B in 3 minutes, then to 90%B in 0.1 minute, hold 90%B for 0.9 minutes

flow rate

0.5 mL/min

pressure

4351 psi (300 bar)

column temp.

40 °C

detector

MS/MS, ESI(+), MRM (See Figure for transitions)

injection

10 μL

sample

10 ng/mL in methanol

说明

分析说明

Fast and selective method for steroids.

法律信息

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