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120834-16-4

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120834-16-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 120834-16-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,8,3 and 4 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 120834-16:
(8*1)+(7*2)+(6*0)+(5*8)+(4*3)+(3*4)+(2*1)+(1*6)=94
94 % 10 = 4
So 120834-16-4 is a valid CAS Registry Number.

120834-16-4Relevant articles and documents

Preparation of Protected β-Keto Aldehydes from β-Keto Esters via Selective Reduction of Acyl(alkoxycarbonyl)ketene Dithioacetals

Choi, Eun Bok,Youn, In Kwon,Pak, Chwang Siek

, p. 792 - 794 (2007/10/02)

The acyl(alkoxycarbonyl)ketene dithioacetals 2 prepared from the corresponding β-keto esters 1 in almost quantitative yield are reduced selectively with magnesium in methanol and subsequently dealkoxycarbonylated to give protected β-keto aldehydes 4 in hi

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