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476000-77-8

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476000-77-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 476000-77-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,6,0,0 and 0 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 476000-77:
(8*4)+(7*7)+(6*6)+(5*0)+(4*0)+(3*0)+(2*7)+(1*7)=138
138 % 10 = 8
So 476000-77-8 is a valid CAS Registry Number.

476000-77-8Relevant articles and documents

Synthesis and cycloadditions of 9H-furo[3,4-b][1]benzo(thio)pyran-9-ones: Furan ring formation by a novel hydrolytically induced cycloreversion

Daia, G.Elena,Gabbutt, Christopher D.,Hepworth, John D.,Heron, B.Mark,Hibbs, David E.,Hursthouse, Michael B.

, p. 4507 - 4510 (2007/10/03)

C-2 lithiation of acetals 2 followed by trapping with aldehydes gives 3. Subsequent unmasking of the acetal function provides furobenzo(thio)pyrans 4, cycloadditions of which have been investigated.

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