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1403680-52-3

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1403680-52-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1403680-52-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,0,3,6,8 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1403680-52:
(9*1)+(8*4)+(7*0)+(6*3)+(5*6)+(4*8)+(3*0)+(2*5)+(1*2)=133
133 % 10 = 3
So 1403680-52-3 is a valid CAS Registry Number.

1403680-52-3Downstream Products

1403680-52-3Relevant articles and documents

Asymmetric inverse-electron-demand hetero-diels-alder reaction for the construction of bicyclic skeletons with multiple stereocenters by using a bifunctional organocatalytic strategy: An efficient approach to chiral macrolides

Jiang, Xianxing,Wang, Long,Kai, Ming,Zhu, Liping,Yao, Xiaojun,Wang, Rui

supporting information, p. 11465 - 11473,9 (2012/12/11)

We have performed the first bifunctional organocatalytic highly enantioselective inverse-electron-demand hetero-Diels-Alder reaction of cyclic ketones with enones to afford densely functionalized bicyclic skeletons that contain three stereocenters (up 82 % yield, 10:1 d.r., and 97 % ee). Unlike the previous IEDDAR catalytic strategy, this method features a double HOMO dienophile/ LUMOdiene-activated pathway. Moreover, this process provides a promising method for the construction of enantioenriched macrolides. Bicyclic exercises: A highly enantioselective inverse-electron- demand hetero-Diels-Alder reaction of cyclic ketones with enones affords functionalized bicyclic skeletons with three stereocenters that can be used for the construction of macrolides. Copyright

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