Analysis of Amemixamine Ⅱ Soft Capsules by High Performance Liquid Chromatography
A high-performance liquid chromatography and soft capsule technology, applied in the field of pharmaceutical analysis, to achieve the effects of improving peak shape, increasing response, and increasing retention
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Embodiment 1
[0074] Chromatographic conditions:
[0075] High performance liquid chromatograph: Waterse2996, PDA detector; Chromatographic column: AgilentSB-C18, 4.6 * 150mm, 5 μ m; Adopt sodium octane sulfonate concentration to be 3 mmol / L sodium octane sulfonate-phosphate buffer solution (weighing Take 0.65g sodium octane sulfonate and 3.12g sodium dihydrogen phosphate into 1L water, adjust the pH to 2.5 with phosphoric acid, degas, filter) as mobile phase A, use acetonitrile as mobile phase B, carry out gradient elution, gradient elution The removal conditions are shown in Table 1; flow rate: 1.2 ml / min; detection wavelength: 275 nm; column temperature: 35°C; injection volume: 20 μL.
[0076] Table 1
[0077] time (min)
Mobile phase A (V%)
Mobile phase B (V%)
0
90
10
1
90
10
16
50
50
17
90
10
21
90
10
[0078] Experimental steps:
[0079](1) Preparation of contrast solution: Accurately wei...
Embodiment 2
[0083] Chromatographic conditions:
[0084] High performance liquid chromatograph: Waterse2996, PDA detector; Chromatographic column: AgilentSB-C18, 4.6 * 150mm, 5 μ m; Adopt sodium octane sulfonate concentration to be the sodium octane sulfonate-phosphate buffer solution ( Weigh 0.65g sodium octane sulfonate, 3.12g sodium dihydrogen phosphate into 1L water, adjust pH to 3.0 with phosphoric acid, degas, filter) as mobile phase A, use acetonitrile as mobile phase B, carry out gradient elution, gradient The elution conditions are shown in Table 1; flow rate: 1.2 ml / min; detection wavelength: 278 nm; column temperature: 35°C; injection volume: 20 μL.
[0085] Experimental procedure: with embodiment 1.
[0086] Its HPLC spectrum is as Figure 4~6 .
Embodiment 3
[0088] Chromatographic conditions:
[0089] High performance liquid chromatograph: Waterse2996, PDA detector; Chromatographic column: AgilentSB-C18, 4.6 * 150mm, 5 μ m; Adopt sodium octane sulfonate concentration to be the sodium octane sulfonate-phosphate buffer solution ( Weigh 0.43g sodium octane sulfonate, 3.12g sodium dihydrogen phosphate into 1L water, adjust pH to 2.5 with phosphoric acid, degas, filter) as mobile phase A, use acetonitrile as mobile phase B, carry out gradient elution, gradient Elution conditions are shown in Table 1; flow rate: 1.2ml / min; detection wavelength: 275nm; column temperature: 35°C; injection volume: 20μL;
[0090] Experimental procedure: with embodiment 1.
[0091] Its HPLC spectrum is as Figure 7-9 .
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