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1280497-50-8

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1280497-50-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1280497-50-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,0,4,9 and 7 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1280497-50:
(9*1)+(8*2)+(7*8)+(6*0)+(5*4)+(4*9)+(3*7)+(2*5)+(1*0)=168
168 % 10 = 8
So 1280497-50-8 is a valid CAS Registry Number.

1280497-50-8Downstream Products

1280497-50-8Relevant articles and documents

Sequential one-pot ruthenium-catalyzed azide-alkyne cycloaddition from primary alkyl halides and sodium azide

Johansson, Johan R.,Lincoln, Per,Norden, Bengt,Kann, Nina

, p. 2355 - 2359 (2011/05/13)

An experimentally simple sequential one-pot RuAAC reaction, affording 1,5-disubstituted 1H-1,2,3-triazoles in good to excellent yields starting from an alkyl halide, sodium azide, and an alkyne, is reported. The organic azide is formed in situ by treating the primary alkyl halide with sodium azide in DMA under microwave heating. Subsequent addition of [RuClCp*(PPh 3)2] and the alkyne yielded the desired cycloaddition product after further microwave irradiation.

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