Sodium Stearyl Fumarate

Sodium Stearyl Fumarate is a mono-ester, amphiphilic sodium salt built on a trans-fumarate backbone with a C18 stearyl tail. Its unique molecular architecture — combining a hydrophobic fatty chain with a rigid, ionic polar head — makes it a superior lubricant that is processing-robust, dissolution-friendly, and broadly compatible, making it the preferred alternative to magnesium stearate in modern solid dosage form development.