The CAS Registry Mumber 82283-42-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,2,8 and 3 respectively; the second part has 2 digits, 4 and 2 respectively. Calculate Digit Verification of CAS Registry Number 82283-42: (7*8)+(6*2)+(5*2)+(4*8)+(3*3)+(2*4)+(1*2)=129 129 % 10 = 9 So 82283-42-9 is a valid CAS Registry Number.
An stereocontrolled partial synthesis of 1α-hydroxy vitamin D3
Vanmaele,De Clercq,Vandewalle
, p. 995 - 998 (2007/10/02)
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