Formulation: A crystalline solid
Formal Name: estra-1,3,5(10)-triene-2,4-d2-3,16α,17β-triol
Purity: ≥98%
Formula Markup: C18H22D2O3
Formula Weight: 290,4
Shelf life (days): 1460
CAS Number: 53866-32-3
Notes: Estriol-d2 is intended for use as an internal standard for the quantification of estriol (Item Nos. ISO60164 / 10006484) by GC- or LC-MS. Estriol is a metabolite of estradiol (Item Nos. ISO60155 / 10006315) and a major estrogen produced in the later stages of pregnancy. In a longitudinal study in healthy pregnant women, total plasma estriol levels increased from 15873) and serves as a direct marker of fetal adrenal gland activity.{7766} Saliva contains primarily unbound and unconjugated estriol and is commonly used for monitoring estriol levels.{7766,7799} Plasma levels of estriol in males and non-pregnant females is less than 2 ng/ml.{7647}