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109600-57-9

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109600-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109600-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,6,0 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 109600-57:
(8*1)+(7*0)+(6*9)+(5*6)+(4*0)+(3*0)+(2*5)+(1*7)=109
109 % 10 = 9
So 109600-57-9 is a valid CAS Registry Number.

109600-57-9Downstream Products

109600-57-9Relevant articles and documents

α, β-Unsaturated N-Acylureas as Useful Intermediates for the Synthesis of Indanones, Chromanones and Coumarins

Ramana, M. M. V.,Kudav, N. A.

, p. 339 - 341 (2007/10/02)

α,β-Unsaturated N-acylureas, viz-N-formamido-2-butenamide (I), N-formamido-3-methyl-2-butenamide (II) and N-formamido-3-phenyl-2-propenamide (III) react with aryl alkyl ethers in the presence of PPA to afford the corresponding crotonophenones and chalcones (IV) at lower temperature and 1-indanones (V) at a higher temperature.Reactions of I and II with phenols in the presence of PPA afford the 4-chromanones (VI), while III gives 3,4-dihydro-4-phenylcoumarins (VII) in excellent yields.

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