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172794-79-5

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172794-79-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 172794-79-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,7,9 and 4 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 172794-79:
(8*1)+(7*7)+(6*2)+(5*7)+(4*9)+(3*4)+(2*7)+(1*9)=175
175 % 10 = 5
So 172794-79-5 is a valid CAS Registry Number.

172794-79-5Relevant articles and documents

Asymmetric hydrogenation of quinolines and isoquinolines activated by chloroformates

Lu, Sheng-Mei,Wang, You-Qing,Han, Xiu-Wen,Zhou, Yong-Gui

, p. 2260 - 2263 (2007/10/03)

(Chemical Equation Presented) Active ingredient: Optically active tetrahydroquinolines and tetrahydroisoquinolines can be obtained by the asymmetric hydrogenation of quinolines and isoquinolines with chloroformates as the activating reagent (e.g., ClCO2Bn, see scheme). The method has been applied to the asymmetric synthesis of several naturally occurring alkaloids. Bn = benzyl.

Asymmetric synthesis of 1-aryl-1,2,3,4-tetrahydroisoquinolines part 1: Addition of chiral phenylacetaldehyde acetals to acylimines

Wuensch, Bernhard,Nerdinger, Sven

, p. 8003 - 8006 (2007/10/02)

The stereoselectivity in the addition of the enantiomerically pure (2-bromophenyl)acetaldehyde acetals 3a-g to the acylimines 4a,b is investigated. Based on this reaction a novel asymmetric synthesis for the 1-phenyl-tetrahydroisoquinoline 8 is elaborated.

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