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5392-57-4

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5392-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5392-57-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,3,9 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 5392-57:
(6*5)+(5*3)+(4*9)+(3*2)+(2*5)+(1*7)=104
104 % 10 = 4
So 5392-57-4 is a valid CAS Registry Number.

5392-57-4Upstream product

5392-57-4Relevant articles and documents

Oxidative Deprotection of p-Methoxybenzyl Ethers via Metal-Free Photoredox Catalysis

Ahn, Deok Kyun,Kang, Young Woo,Woo, Sang Kook

, p. 3612 - 3623 (2019)

An efficient and greener deprotection method for p-methoxybenzyl (PMB) ethers using a metal-free visible light photoredox catalyst and air and ammonium persulfate as the terminal oxidants is presented. Various functional groups and protecting groups were tolerated in the developed method to achieve good to excellent yields in short reaction times. Significantly, the developed method was compatible with PMB ethers derived from primary, secondary, and tertiary alcohols and a gram-scale reaction. Mechanistic studies support a proposed reaction mechanism that involves single electron oxidation of the PMB ether.

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