Lipoidal estradiol

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Estradiol stearate, one of the estradiol esters that represents lipoidal estradiol.

Lipoidal estradiol (LE2) is the variety of

hydrophobic and are found in highest concentrations in adipose tissue and other estrogen-sensitive tissues and in low but detectable concentrations in circulation, with none excreted in urine.[1][2] They have been referred to as the "endogenous counterparts of the synthetic esters of estrogens" like estradiol valerate and estradiol cypionate.[1][2]

Two of the estradiol esters that compose LE2, estradiol palmitate and estradiol stearate, have been developed and marketed for medical use as long-acting estrogens for use via depot intramuscular injection.[3][4]

Estradiol is esterified into LE2 by lecithin–cholesterol acyltransferase (LCAT).[5]

See also

References