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200347-26-8

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200347-26-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 200347-26-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,3,4 and 7 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 200347-26:
(8*2)+(7*0)+(6*0)+(5*3)+(4*4)+(3*7)+(2*2)+(1*6)=78
78 % 10 = 8
So 200347-26-8 is a valid CAS Registry Number.

200347-26-8Relevant articles and documents

Heterocyclic synthesis by C-C bond formation. Tetrahydrofuran and tetrahydropyran synthesis via oxonium ion-mediated cyclisation reactions

Craig, Donald,King, N. Paul,Shaw, Antony N.

, p. 8599 - 8602 (2007/10/03)

Dimethyl(methylthio)sulfonium tetrafluoroborate triggers ionisation and cyclisation of hemithioacetals 3 to give tetrahydrofurans 8-11 in good yields and stereoselectivities. The homologous sulfone analogues 17 give tetrahydropyrans on treatment with ethy

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