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Glyceryl Monostearate

Excipient (pharmacologically inactive substance)

What is it?

Glyceryl monostearate, C21H42O4, also known as monostearin, is a mixture of variable proportions of glyceryl monostearate, glyceryl monopalmitate , and glyceryl esters of fatty acids present in commercial stearic acid. In industry, it can be used as an emulsifier. It also occurs naturally in the body as a fat metabolite, and is present in foods with high fat content. In pharmaceuticals, it is used as a protective coating for hygroscopic powders, and a solidifier and control release agent.[1]

[1] FDA: CFR - Code of Federal Regulations Title 21. Accessed February 15, 2015 at http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=184.1324

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