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176248-72-9

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176248-72-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 176248-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,2,4 and 8 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 176248-72:
(8*1)+(7*7)+(6*6)+(5*2)+(4*4)+(3*8)+(2*7)+(1*2)=159
159 % 10 = 9
So 176248-72-9 is a valid CAS Registry Number.

176248-72-9Relevant articles and documents

Cobalt-Catalyzed Intermolecular Markovnikov Hydroamination of Nonactivated Olefins: N2-Selective Alkylation of Benzotriazole

Yahata, Kenzo,Kaneko, Yuki,Akai, Shuji

, p. 598 - 603 (2020)

Cobalt-catalyzed Markovnikov-selective hydroamination of nonactivated olefins was developed. Hydrogen atom transfer from a catalytically generated cobalt(III)-hydride complex to the olefins proceeded regioselectively, and the nucleophilic addition of benzotriazoles occurred selectively at their N2-positions. The synthetic utility of the obtained N2-alkylated benzotriazoles as stable amine protecting groups under various reaction conditions was demonstrated, and the products were also transformed into primary amines by zinc-mediated reduction.

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