The CAS Registry Mumber 112670-81-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,6,7 and 0 respectively; the second part has 2 digits, 8 and 1 respectively. Calculate Digit Verification of CAS Registry Number 112670-81: (8*1)+(7*1)+(6*2)+(5*6)+(4*7)+(3*0)+(2*8)+(1*1)=102 102 % 10 = 2 So 112670-81-2 is a valid CAS Registry Number.
Reductive alkylation of a selenoacetal in the elaboration of steroid side chains: Stereochemistry and application in a synthesis of 1α-hydroxyvitamin D3
Calverley
, p. 1337 - 1340 (2007/10/02)
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