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109839-43-2

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109839-43-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109839-43-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,8,3 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 109839-43:
(8*1)+(7*0)+(6*9)+(5*8)+(4*3)+(3*9)+(2*4)+(1*3)=152
152 % 10 = 2
So 109839-43-2 is a valid CAS Registry Number.

109839-43-2Downstream Products

109839-43-2Relevant articles and documents

Cycloaddition Reactions of a Bisisobenzofuran Leading to Linear Polyacenoquinones and a Quadruply Bridged Cyclophane

Chiba, Toshiro,Kenny, Peter W.,Miller, Larry L.

, p. 4327 - 4331 (2007/10/02)

The bisisobenzofuran 1,3,7,9-tetrakis(4-tert-butylphenyl)anthradifuran-5,11 dione (3) was reacted with dienophiles.Maleic anhydride and N-methylmaleimide produced bis adducts that were the syn and anti isomers resulting from endo additions.T

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