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127956-25-6

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127956-25-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127956-25-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,9,5 and 6 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 127956-25:
(8*1)+(7*2)+(6*7)+(5*9)+(4*5)+(3*6)+(2*2)+(1*5)=156
156 % 10 = 6
So 127956-25-6 is a valid CAS Registry Number.

127956-25-6Relevant articles and documents

Copper-catalyzed sp3-sp3 cross-coupling of turbo grignards with benzyl halides

Elahi-Mohassel, Synah,Girgis, Michael,Paige, Mikell,Petruncio, Greg

, (2021/11/17)

The aromatic ring in benzyl halides and sulfonates imparts unique reactivity at the benzylic carbon atom. Photoredox sp3-sp3 cross-coupling proved ineffective for coupling p-methoxybenzyl chloride (PMBCl), leading to a new strategy for the sp3-sp3 cross-coupling of benzyl halides and sulfonates. This strategy involved LiCl-accelerated synthesis of a Grignard reagent followed by a copper-catalyzed cross-coupling. The conditions worked well for PMBCl due to its exceptional reactivity but other benzyl bromides or sulfonates reacted poorly.

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