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69504-03-6

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69504-03-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69504-03-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,5,0 and 4 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 69504-03:
(7*6)+(6*9)+(5*5)+(4*0)+(3*4)+(2*0)+(1*3)=136
136 % 10 = 6
So 69504-03-6 is a valid CAS Registry Number.

69504-03-6Relevant articles and documents

ISOMERIZATION OF tert-BUTYLDIMETHYLSILYL PROTECTING GROUPS IN RIBONUCLEOSIDES

Ogilvie, Kelvin K.,Entwistle, Douglas W.

, p. 203 - 210 (2007/10/02)

The tert-butyldimethylsilyl group undergoes isomerization between O-2' and O-3' in ribonucleosides in solution.Isomerization is most rapid in protic solvents and extremely slow in such solvents as dry dimethyl sulfoxide, pyridine, oxolane, chloroform, or

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