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26478-81-9

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26478-81-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 26478-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,4,7 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 26478-81:
(7*2)+(6*6)+(5*4)+(4*7)+(3*8)+(2*8)+(1*1)=139
139 % 10 = 9
So 26478-81-9 is a valid CAS Registry Number.

26478-81-9Downstream Products

26478-81-9Relevant articles and documents

N-Heterocyclic Carbene-Catalyzed Annulation of Ylides with Ynals: Direct Access to α-Pyrones

Lang, Ming,Jia, Qianfa,Wang, Jian

supporting information, p. 2427 - 2430 (2018/09/10)

We herein report an N-Heterocyclic Carbene (NHC)-catalyzed annulation of ylides with ynals that provides an efficient protocol to make 4,6-disubstituted α-pyrones. This method affords a variety of α-pyrones in good to high yields as well as broad substrat

Preparation of 4,6-Disubstituted α-Pyrones by Oxidative N-Heterocyclic Carbene Catalysis

Bera, Srikrishna,Studer, Armido

, p. 121 - 126 (2016/12/24)

An efficient synthesis of 4,6-disubstituted α-pyrones employing redox activation of enals using N-heterocyclic carbene catalysis is reported. The strategy uses aroyl-substituted nitromethanes and enals as substrates and reactions proceed through an additi

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