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1256543-90-4

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1256543-90-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256543-90-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,5,4 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1256543-90:
(9*1)+(8*2)+(7*5)+(6*6)+(5*5)+(4*4)+(3*3)+(2*9)+(1*0)=164
164 % 10 = 4
So 1256543-90-4 is a valid CAS Registry Number.

1256543-90-4Relevant articles and documents

Oxidative oxo Diels-Alder reactions of Baylis-Hillman adducts with electron-rich alkenes in the presence of IBX

Yang, Jing,Li, Heping,Shi, Bo,Tian, Shengzhi,Zhang, Juan

experimental part, p. 1567 - 1576 (2012/05/04)

Baylis-Hillman adducts were oxidized by iodoxybenzoic acid (IBX) to 2-methylene-1,3-dicarbonyl compounds, which can act as oxodiene to react with electron-rich alkenes to generate a variety of oxo Diels-Alder adducts in good yields. Copyright Taylor & Fra

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