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81896-23-3

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81896-23-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81896-23-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,9 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81896-23:
(7*8)+(6*1)+(5*8)+(4*9)+(3*6)+(2*2)+(1*3)=163
163 % 10 = 3
So 81896-23-3 is a valid CAS Registry Number.

81896-23-3Relevant academic research and scientific papers

Metal-free synthesis of 3,3-disubstituted oxoindoles by iodine(III)-catalyzed bromocarbocyclizations

Fabry, David C.,Stodulski, MacIej,Hoerner, Stefanie,Gulder, Tanja

supporting information; experimental part, p. 10834 - 10838 (2012/09/10)

"I" did it: An iodine(III)-mediated bromocarbocyclization was elaborated as an efficient tool for the synthesis of oxoindoles. This method is applicable to a variety of structurally different substrates, also with chemically sensitive groups, and gives access to the heterocycles in a regio- and stereoselective fashion (see scheme). The indole-2-ones obtained can be converted easily into structurally complex target compounds, such as the alkaloid physostigmine. Copyright

Highly enantioselective construction of the α-chiral center of amides via iridium-catalyzed hydrogenation of α,β-unsaturated amides

Lu, Wei-Jing,Hou, Xue-Long

supporting information; experimental part, p. 1224 - 1228 (2009/12/06)

The chiral center at the a-position of amides is installed in excellent enantioselectivity via the iridium-catalyzed asymmetric hydrogenation of αβ-unsaturated amides under mild conditions. Even aliphatic amides are suitable substrates. The presence of a

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