Hormone Replacement Capsule Analysis with HPLC – AppNote

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ARTICLES, APPNOTES, FAQ (9289)
- AppNotes Library (1888)
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- Frequently Asked Questions?? (3402)
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April 28, 2012
dcatri

AppNotes Cogent UDC Cholesterol / AppNotes Library / AppNotes Pharmaceuticals / AppNotes Reversed Phase Methods / ARTICLES, APPNOTES, FAQ

Separation of Estriol, Estradiol, & Progesterone

This gradient method features a separation of the three components of a hormone replacement formulation. Figure A shows a five run overlay of the formulation extract injections. Figure B shows a zoomed-in view so that the Estriol and Estradiol Peaks, which are present in much lower concentration than Progesterone, can be seen clearly. Figure B also shows separation of an impurity from the Progesterone Peak.

Peak:
1. Estriol
2. Estradiol
3. Progesterone

Method Conditions
Column: Cogent UDC Cholesterol™, 4μm, 100Å
Catalog No.: 69069-7.5P
Dimensions: 4.6 x 75mm
Mobile Phase:
—A: DI Water / 0.1% Formic Acid (v/v)
—B: Acetonitrile / 0.1% Formic Acid (v/v)
Gradient:

Time (minutes)	%B
0	33
2	33
11	65
12	33

Post Time: 3 minutes
Flow rate: 1.0 mL / minute
Detection: UV @ 210nm
Injection vol.: 1μL
Sample Preparation: The contents of a capsule containing 0.124 mg Estradiol, 1.001 mg Estriol, and 50 mg Progesterone were added to a 25 mL volumetric flask. The flask was diluted to mark with solvent B and sonicated 10 minutes. Then A portion was filtered with a 0.45µm Nylon Syringe Filter (MicroSolv Tech. Corp.). Peak identities were confirmed by individual standards of 0.1 mg / mL in a Solvent B diluent.

Attachment

No 175 Hormone Replacement Capsule Analysis pdf 0.4 Mb Download File

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