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51632-25-8

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51632-25-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51632-25-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,6,3 and 2 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 51632-25:
(7*5)+(6*1)+(5*6)+(4*3)+(3*2)+(2*2)+(1*5)=98
98 % 10 = 8
So 51632-25-8 is a valid CAS Registry Number.

51632-25-8Relevant articles and documents

Catalytic asymmetric protonation of silyl ketene imines

Guin, Joyram,Varseev, Georgy,List, Benjamin

supporting information, p. 2100 - 2103 (2013/03/28)

An efficient catalytic and highly enantioselective protonation of silyl ketene imines is described. The reaction is catalyzed by the chiral phosphoric acids TRIP or STRIP in the presence of a stoichiometric amount of methanol as the proton source and silyl acceptor. A variety of substituted racemic silyl ketene imines have been transformed into highly enantioenriched nitriles.

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