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533902-59-9

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533902-59-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 533902-59-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,3,3,9,0 and 2 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 533902-59:
(8*5)+(7*3)+(6*3)+(5*9)+(4*0)+(3*2)+(2*5)+(1*9)=149
149 % 10 = 9
So 533902-59-9 is a valid CAS Registry Number.

533902-59-9Relevant articles and documents

An oxidative entry into the amido trioxadecalin ring system.

Rech, Jason C,Floreancig, Paul E

, p. 1495 - 1498 (2007/10/03)

The amido trioxadecalin ring system is a key structural component of the architecturally interesting anticancer and immunosuppressive agents of the mycalamide, theopederin, and onnamide families of natural products. We report a new entry into this structure in which a mixed acetal serves as a surrogate for a formaldehyde hemiacetal in an addition to an oxidatively generated acyliminium ion. The stereochemical outcome of this process can be explained by the conformational preferences of the product ring system. [reaction: see text]

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