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1,2,3-Tripalmitoyl glycerol is a triacylglycerol that contains palmitic acid (Item No. 10006627) at the sn-1, sn-2, and sn-3 positions and has been found in palm oil. It inhibits glucose-stimulated insulin secretion and reduces viability of INS1 cells in a concentration-dependent manner. Myocardial levels of 1,2,3-tripalmitoyl glycerol are elevated by greater than 5-fold in a rat model of diabetes induced by streptozotocin (Item No. 13104). 1,2,3-Tripalmitoyl glycerol has been used to form the lipid matrices of etoposide-incorporated nanoparticles. Formulations containing 1,2,3-tripalmitoyl glycerol have been used in cosmetic products as thickening and skin-conditioning agents.

White, crystalline powder. Soluble in ether and chloroform; insoluble in water. Combustible.

ChEBI: A triglyceride obtained by formal acylation of the three hydroxy groups of glycerol by palmitic (hexadecanoic) acid.

Glyceryl tripalmitate is a carrier molecule for effective drug delivery and is used solid lipid nanoparticle formulations.

Crystallise it from acetone, diethyl ether or EtOH. It exists in an -form (m 56.0o), a ’-form (m 63.5o) and a -form (m 65.5o). [Beilstein 2 H 373, 2 I 167, 2 II 340, 2 III 971.]

[1] MIROSLAV LíSA  Michal H. Triacylglycerols profiling in plant oils important in food industry, dietetics and cosmetics using high-performance liquid chromatography-atmospheric pressure chemical ionization mass spectrometry.[J]. Journal of Chromatography A, 2008, 1198-1199: 115-130. DOI: 10.1016/j.chroma.2008.05.037
[2] J H MOFFITT. Adverse physicochemical properties of tripalmitin in beta cells lead to morphological changes and lipotoxicity in vitro.[J]. Diabetologia, 2005: 1819-1829. DOI: 10.1007/s00125-005-1861-9
[3] LAKKIREDDY HARIVARDHAN REDDY. Etoposide-incorporated tripalmitin nanoparticles with different surface charge: formulation, characterization, radiolabeling, and biodistribution studies.[J]. AAPS Journal, 2004, 6 3: e23. DOI: 10.1208/aapsj060323