The CAS Registry Mumber 87936-46-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,9,3 and 6 respectively; the second part has 2 digits, 4 and 6 respectively. Calculate Digit Verification of CAS Registry Number 87936-46: (7*8)+(6*7)+(5*9)+(4*3)+(3*6)+(2*4)+(1*6)=187 187 % 10 = 7 So 87936-46-7 is a valid CAS Registry Number.
A tandem cycloaddition-ene strategy for the synthesis of (±)-verrucarol and (±)-4,11-diepi-12,13-deoxyverrucarol
Trost,McDougal,Haller
, p. 383 - 395 (1984)
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