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229639-57-0

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229639-57-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 229639-57-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,9,6,3 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 229639-57:
(8*2)+(7*2)+(6*9)+(5*6)+(4*3)+(3*9)+(2*5)+(1*7)=170
170 % 10 = 0
So 229639-57-0 is a valid CAS Registry Number.

229639-57-0Relevant articles and documents

A new and direct asymmetric synthesis of a hindered chiral amine via a novel sulfinate ketimine derived from N-tosyl-1,2,3-oxathiazolidme-2-oxide: Practical asymmetric synthesis of (R)-sibutramine

Han, Zhengxu,Krishnamurthy, Dhileepkumar,Senanayake, Chris H.

, p. 327 - 333 (2006)

A novel and direct approach for the asymmetric synthesis of (R)-sibutramine via chiral amine 5 using N-tosyl-1,2,3-oxathiazolidine-2-oxide (13) as a recyclable chiral auxiliary is described. Chiral sulfinate imine 16e was obtained by treatment of 13e with

PHENYLCYCLOBUTYLAMIDE DERIVATIVES AND THEIR STEREOISOMERS, THE PREPARING PROCESSES AND THE USES THEREOF

-

Page/Page column 8, (2010/12/30)

Phenylcyclobutylamide derivatives and their optical isomers, the preparing processes and the uses thereof, which includes the compounds of formula (I), their pure stereoisomers and their pharmaceutically acceptable salts. In formula (I), R is H, formacyl,

A method of manufacturing an amine stereoisomerically

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Page/Page column 53, (2010/02/12)

This invention provides intermediates useful in a method of preparing amine stereoisomers. It also provides a method of preparing sulfoxide and sulfinylamine stereoisomers using certain of the intermediates.

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