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Determination of Melting Point of Prasugrel by Capillary Method (CAT#: STEM-PPA-0043-YJL)

Introduction

Prasugrel is a thienopyridinic compound approved in 2009 by Food and Drug Administration (FDA) for the management of acute coronary syndromes and in patients undergoing percutaneous coronary intervention. The synthesis of racemic mixture is common but the coated tablets containing prasugrel were marketed in the hydrochloride form due its better hydrolytic stability and satisfactory solubility in physiological pH. Prasugrel hydrochloride is a white to light brown crystalline solid and slightly hygroscopic. <br />There are methods that provide important physicochemical information for identification and structural elucidation of reference standards, ensuring their characterization for further analysis of drugs present in pharmaceuticals. Melting range is a physical test employed to identify chemical substances such as drugs.




Principle

Melting point is a characteristic property of solid crystalline substance. It is the temperature at which the solid phase changes to the liquid phase. This phenomenon occurs when the substance is heated.
The melting point measurement is usually performed in thin glass capillary tubes with an internal diameter of 1 mm and a wall thickness of 0.1 – 0.2 mm. A finely-ground sample is placed in the capillary tube to a filling level of 2 – 3 mm and introduced in a heated stand (liquid bath or metal block) in close proximity to a high accuracy thermometer. The temperature in the heating stand is ramped at a user-programmable fixed rate. The melting process is visually inspected to determine the melting point of the sample.

Applications

Chemical industry; Cosmetic/pharmaceutical industry

Procedure

1. Seal capillary.
2. Fill the sample.
3. Install the instrument.
4. Determine the melting point.

Materials

• Sample Type: crystalline compounds