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250721-90-5

250721-90-5

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250721-90-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 250721-90-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,7,2 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 250721-90:
(8*2)+(7*5)+(6*0)+(5*7)+(4*2)+(3*1)+(2*9)+(1*0)=115
115 % 10 = 5
So 250721-90-5 is a valid CAS Registry Number.

250721-90-5Relevant articles and documents

Direct Copper-Catalyzed C-H Monofluoroalkylation of Benzoxazoles with 1-Fluoro-1-haloalkanes

Li, Wei,Varenikov, Andrii,Gandelman, Mark

supporting information, p. 3138 - 3141 (2020/03/13)

The first example of direct C–H bond monofluoroalkylation with 1-fluoro-1-haloalkanes with no adjacent functional groups and with β-hydrogens has been developed. This transformation offers a straightforward route for the synthesis of a series of monofluoroalkylated benzoxazoles.

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