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1629135-44-9

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1629135-44-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1629135-44-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,9,1,3 and 5 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1629135-44:
(9*1)+(8*6)+(7*2)+(6*9)+(5*1)+(4*3)+(3*5)+(2*4)+(1*4)=169
169 % 10 = 9
So 1629135-44-9 is a valid CAS Registry Number.

1629135-44-9Downstream Products

1629135-44-9Relevant articles and documents

N-heterocyclic carbene-catalyzed enantioselective annulation of indolin-3-ones with bromoenals

Ni, Qijian,Song, Xiaoxiao,Raabe, Gerhard,Enders, Dieter

, p. 1535 - 1538 (2014/06/09)

N-Heterocyclic carbene-catalyzed reactions of indolin-3-ones with 2-bromoenals opened an asymmetric access to 3,4-dihydropyrano[3,2-b]indol-2(5 H)-ones in good yields and with good to excellent enantioselectivities. This protocol tolerates a broad substrate scope. In addition, a possible mechanism for the annulation reaction is presented. More NHC-organocatalysis: N-Heterocyclic carbene-catalyzed reactions of indolin-3-ones with 2-bromoenals opened an asymmetric access to 3,4-dihydropyrano[3,2-b]indol-2(5 H)-ones in good yields and with good to excellent enantioselectivities. This protocol tolerates a broad substrate scope. In addition, a possible mechanism for the annulation reaction is presented.

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