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828933-81-9

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828933-81-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 828933-81-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,2,8,9,3 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 828933-81:
(8*8)+(7*2)+(6*8)+(5*9)+(4*3)+(3*3)+(2*8)+(1*1)=209
209 % 10 = 9
So 828933-81-9 is a valid CAS Registry Number.

828933-81-9Relevant articles and documents

Enantioselective [4 + 2] cycloadditions of o-quinone methides: Total synthesis of (+)-mimosifoliol and formal synthesis of (+)-tolterodine

Selenski, Carolyn,Pettus, Thomas R. R.

, p. 9196 - 9203 (2007/10/03)

The first example of an enantioselective cycloaddition of an o-quinone methide (o-QM) with a chiral enol ether is described along with the total synthesis of (+)-mimosifoliol and the formal synthesis of (+)-tolterodine. These syntheses exemplify a three-c

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