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168154-77-6

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168154-77-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 168154-77-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,8,1,5 and 4 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 168154-77:
(8*1)+(7*6)+(6*8)+(5*1)+(4*5)+(3*4)+(2*7)+(1*7)=156
156 % 10 = 6
So 168154-77-6 is a valid CAS Registry Number.

168154-77-6Upstream product

168154-77-6Relevant articles and documents

A highly diastereoselective decarboxylative mannich reaction of β-keto acids with optically active N-sulfinyl α-imino esters

Yang, Cui-Feng,Shen, Chen,Wang, Jian-Yong,Tian, Shi-Kai

supporting information; experimental part, p. 3092 - 3095 (2012/08/28)

A range of protected γ-oxo-α-amino esters have been prepared in a highly regio- and stereoselective manner through the decarboxylative Mannich reaction of β-keto acids with optically active N-tert-butanesulfinyl α-imino esters in the presence of 3 mol % La(OTf)3 or 5 mol % Y(OTf)3 at 20 °C. Preliminary mechanistic studies indicate that the reaction proceeds through imine addition followed by decarboxylation.

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