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129159-24-6

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129159-24-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129159-24-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,1,5 and 9 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 129159-24:
(8*1)+(7*2)+(6*9)+(5*1)+(4*5)+(3*9)+(2*2)+(1*4)=136
136 % 10 = 6
So 129159-24-6 is a valid CAS Registry Number.

129159-24-6Downstream Products

129159-24-6Relevant articles and documents

Diethylaminosulphur Trifluoride (DAST) as an Effective Reagent for Preparation of Methyl 2-Arylpropanoates from 1-Aryl-1,1-dimethoxypropan-2-ols

Yamauchi, Takayoshi,Hattori, Kaneaki,Ikeda, Shun-ichi,Tamaki, Kentaro

, p. 1683 - 1685 (2007/10/02)

Treatment of dimethylacetals of aryl 1-hydroxyethyl ketones (Ar= Ph, 4-PhC6H4, 4-BuiC6H4, 4-MeOC6H4, 4-BrC6H4, 6-MeOnaphthalen-2-yl) with diethylaminosulphur trifluoride (DAST) affords smoothly the methyl 2-arylpropanoates in good yield via aryl-group migration.On the other hand, treatment of aryl 1-hydroxyethyl ketones with DAST gives the corresponding aryl 1-fluoroethyl ketones (Ar= Ph, 4-PhC6H4, 4-BuiC6H4) in high yield.

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