17-β-estradiol, also known as E2, is a naturally occurring steroid hormone and the most potent form of estrogen in humans. It plays a crucial role in the development of female secondary sexual characteristics, regulation of the menstrual cycle, and maintenance of pregnancy. Structurally, 17-β-estradiol is a C18H24O2 molecule derived from cholesterol, featuring a phenolic hydroxyl group and a conjugated double-bond system. This hormone is primarily produced in the ovaries, with additional synthesis occurring in the adrenal glands, fat cells, and placenta. It exerts its effects by binding to estrogen receptors, which then modulate gene expression and influence various physiological processes. The importance of 17-β-estradiol is underscored by its impact on bone health, cardiovascular function, and cognitive abilities, as well as its role in reproductive health.
The CAS Registry Mumber 2529-54-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,2 and 9 respectively; the second part has 2 digits, 5 and 4 respectively. Calculate Digit Verification of CAS Registry Number 2529-54: (6*2)+(5*5)+(4*2)+(3*9)+(2*5)+(1*4)=86 86 % 10 = 6 So 2529-54-6 is a valid CAS Registry Number.