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1391932-43-6

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1391932-43-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1391932-43-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,9,1,9,3 and 2 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1391932-43:
(9*1)+(8*3)+(7*9)+(6*1)+(5*9)+(4*3)+(3*2)+(2*4)+(1*3)=176
176 % 10 = 6
So 1391932-43-6 is a valid CAS Registry Number.

1391932-43-6Relevant articles and documents

Photoreductive Removal of O-Benzyl Groups from Oxyarene N-Heterocycles Assisted by O-Pyridine-pyridone Tautomerism

Todorov, Aleksandar R.,Wirtanen, Tom,Helaja, Juho

, p. 13756 - 13767 (2017/12/26)

Facile photoreductive protocols have been developed to remove benzyl O-protective groups from oxyarene N-heterocycles at positions capable for 2-/4-O-pyridine-2-/4-pyridone tautomerism. Blue light irradiation, a [Ru] or [Ir] photocatalyst, and ascorbic acid in a water-acetonitrile solution debenzylates a variety of aryl N-heterocycles cleanly and selectively. Ascorbic acid has two functions in the reaction. On the one hand, it protonates the N-heterocycles that reduces their reduction potentials notably and on the other hand it acts as a sacrificial reductant. Reduction potentials and free energy barriers calculated at the CPCM-B3LYP/6-31+G? level can predict the reactivities of the studied substrates.

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