25918-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 25918-91-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,9,1 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 25918-91:
(7*2)+(6*5)+(5*9)+(4*1)+(3*8)+(2*9)+(1*1)=136
136 % 10 = 6
So 25918-91-6 is a valid CAS Registry Number.
25918-91-6Relevant articles and documents
17β-Ethynyl-3,17α-estradiol and derivatives thereof
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, (2008/06/13)
17β-ethynyl-3,17α-estradiol and derivatives thereof are prepared by epimerization of 17-acyl esters of 17α-ethynyl-3,17β-estradiol 3-ethers. 17α-ethynyl-3,17α-estradiol and its derivatives are active as post-coital antifertility agents and inhibit the growth of or reduce the size of the prostate gland and the seminal vesicle.
