The CAS Registry Mumber 40128-88-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,1,2 and 8 respectively; the second part has 2 digits, 8 and 8 respectively. Calculate Digit Verification of CAS Registry Number 40128-88: (7*4)+(6*0)+(5*1)+(4*2)+(3*8)+(2*8)+(1*8)=89 89 % 10 = 9 So 40128-88-9 is a valid CAS Registry Number.
11α-Methoxy estradiol and estriol derivatives. Antiestrogen activity of 11α-methoxy-17 α-ethynylestradiol: RU 16 117
Azadian-Boulanger,Bouton,Bucourt,et al.
, p. 313 - 319 (2007/10/22)
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