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202933-83-3

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202933-83-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 202933-83-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,9,3 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 202933-83:
(8*2)+(7*0)+(6*2)+(5*9)+(4*3)+(3*3)+(2*8)+(1*3)=113
113 % 10 = 3
So 202933-83-3 is a valid CAS Registry Number.

202933-83-3Relevant articles and documents

Stereoselective synthesis of 2,3,5-trisubstituted tetrahydrofurans by an allyl silane metathesis - Nucleophilic addition sequence

Cassidy, John H.,Marsden, Stephen P.,Stemp, Geoffrey

, p. 1411 - 1413 (1997)

Functionalised cyclic allyl silanes have been prepared by the ring closing metathesis of allyldimethylsilyl ethers of homoallylic alcohols. Treatment of these allyl silanes with aldehydes in the presence of boron trifluoride etherate gives high yields of

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