59839-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 59839-81-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,9,8,3 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 59839-81:
(7*5)+(6*9)+(5*8)+(4*3)+(3*9)+(2*8)+(1*1)=185
185 % 10 = 5
So 59839-81-5 is a valid CAS Registry Number.
59839-81-5Relevant articles and documents
Process for producing a sulfone derivative of vitamin A alcohol
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, (2008/06/13)
A process for the preparation of vitamin A and esters thereof from the condensation of a sulfone of 2-methyl-4-hydroxy-but-2-ene and an activated derivative of 3-methyl-5-(2,6,6-trimethyl-cyclohexen-1-yl)penta-2,4-diene including intermediates therein.