Super fast liquid phase chromatography-tandem mass spectrometric method for determining hydroxypropyl-beta-cyclodextrin
A technology of liquid chromatography and tandem mass spectrometry, which is applied in the direction of measuring devices, instruments, and material analysis through electromagnetic means, can solve problems that have not been reported in the literature, and achieve fast analysis speed, simple operation, and good reproducibility.
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Embodiment 1
[0042]Embodiment 1 measures the content of HP-β-CD in the preparation with ultra-fast liquid chromatography (UFLC)-tandem mass spectrometry (MS / MS), comprises the following steps:
[0043] (1) Preparation of HP-β-CD standard curve solution: Accurately weigh 0.0050 g of HP-β-CD standard product produced by NIHON SHOKUHIN Company in a 10ml volumetric flask, and use methanol- Water mobile phase to volume, shake well to get 500μg / ml HP-β-CD standard solution as stock solution; draw 200μl of stock solution into another 10ml volumetric flask, mobile phase to volume, shake well to get 10μg / ml HP-β-CD standard solution.
[0044] Take 500 μL, 10 μg / ml HP-β-CD standard solution in a 3ml centrifuge tube, add 1500 μL of mobile phase, put it into a vortex mixer (Jincheng Teaching Instrument Factory, Jintan City) and vortex to mix to obtain 2500ng / ml solution; take 800μL, 2500ng / ml solution in a 1.5ml centrifuge tube, add 200μL of mobile phase, put it into a vortex mixer and vortex to mix,...
Embodiment 2
[0050] Embodiment 2 measures the content of HP-β-CD in urine with ultrafast liquid chromatography (UFLC)-tandem mass spectrometry (MS / MS) to be 4.5mg / ml, and obtain chromatogram Figure 6 .
[0051] The preparation of HP-β-CD standard curve solution, HP-β-CD QC solution and liquid chromatography-tandem mass spectrometry analysis are the same as in Example 1.
[0052] Urine was used as the sample, and the processing method was as follows: use a pipette gun to accurately absorb the urine of the subject, add ethylenediaminetetraacetic acid (EDTA) at a volume of 1:1 to 1:2 of the urine, and put it in a vortex mixer. After vortex mixing in the homogenizer, add ammonia water with a urine volume of 1:50 to 1:55, vortex and mix to obtain a mixed solution, and then add methanol with a volume ratio of 1:1 to 9:1 to the mixed solution Water mobile phase, vortex and mix for 2 minutes, then put it into a high-speed centrifuge and centrifuge at a speed of 5000r / min for 5 minutes, use a pip...
Embodiment 3
[0053] Embodiment 3 is used to measure the ultra-fast liquid chromatography-tandem mass spectrometry of HP-β-CD, wherein the preparation of HP-β-CD standard curve solution, HP-β-CD QC solution and liquid chromatography-tandem mass spectrometry analysis all With embodiment 1.
[0054] The processing of the sample is the same as in Example 1 or Example 2.
[0055] The mobile phase is methanol-ammonium acetate with a volume ratio of 2:1-4:1; wherein the concentration of ammonium acetate is 1-10 mM.
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