Retinyl palmitate(Vitamin A palmitate)
Chemical Formula: C36H60O2
Molecular Weight: 524.86
CAS Number: 79-81-2
Description: Retinyl palmitate USP, Yellow or brownish yellow, Oily liquid, ≥98.0% (HPLC)
All-trans-retinyl palmitate is an all-trans-retinyl ester obtained by formal condensation of the carboxy group of palmitic (hexadecanoic acid) with the hydroxy group of all-trans-retinol. It is a retinyl palmitate and an all-trans-retinyl ester. It derives from an all-trans-retinol. Retinyl palmitate is an alternate for retinyl acetate in vitamin A supplements, and is available in oily or dry forms. It is a pre-formed version of vitamin A, and can thus be realistically over-dosed, unlike beta-carotene. Retinyl Palmitate is a naturally-occurring phenyl analogue of retinol (vitamin A) with potential antineoplastic and chemopreventive activities. As the most common form of vitamin A taken for dietary supplementation, retinyl palmitate binds to and activates retinoid receptors, thereby inducing cell differentiation and decreasing cell proliferation. This agent also inhibits carcinogen-induced neoplastic transformation, induces apoptosis in some cancer cell types, and exhibits immunomodulatory properties.