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290825-97-7

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290825-97-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 290825-97-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,0,8,2 and 5 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 290825-97:
(8*2)+(7*9)+(6*0)+(5*8)+(4*2)+(3*5)+(2*9)+(1*7)=167
167 % 10 = 7
So 290825-97-7 is a valid CAS Registry Number.

290825-97-7Relevant articles and documents

Pyrrole synthesis catalyzed by AgOTf or cationic Au(I) complexes

Harrison, Tyler J.,Kozak, Jennifer A.,Corbella-Pane, Montserrat,Dake, Gregory R.

, p. 4525 - 4529 (2006)

Either silver trifluoromethanesulfonate or a mixture of gold(I) chloride, silver trifluoromethanesulfonate, and triphenylphosphine catalyze the formation of pyrroles from substituted β-alkynyl ketones and amines. The reactions proceed by using 5 mol % of catalyst with yields of isolated pyrroles ranging from 13% to 92%. Sixteen examples are used to compare the effectiveness of each catalyst.

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