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189562-37-6

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189562-37-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 189562-37-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,5,6 and 2 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 189562-37:
(8*1)+(7*8)+(6*9)+(5*5)+(4*6)+(3*2)+(2*3)+(1*7)=186
186 % 10 = 6
So 189562-37-6 is a valid CAS Registry Number.

189562-37-6Relevant articles and documents

An efficient synthesis of N-protected threo (2R,3S)-3-amino-1,2-epoxy phenylbutane

Suzuki, Takayuki,Honda, Yutaka,Izawa, Kunisuke

, p. 5811 - 5814 (2005)

A precise and versatile method was developed for the synthesis of threo amino epoxide derivatives, which are useful intermediates for protease inhibitors. It involves the diastereoselective reduction of the carbonyl group of γ-N,N-dibenzyl amino α-hydroxy β-keto sulfide prepared from an amino acid, and its subsequent stereospecific conversion to an amino epoxide via acetoxy halogenation in high yield.

Method for producing α-hydroxy-β-aminocarboxylic acids

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, (2008/06/13)

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