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90493-86-0

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90493-86-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90493-86-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,4,9 and 3 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 90493-86:
(7*9)+(6*0)+(5*4)+(4*9)+(3*3)+(2*8)+(1*6)=150
150 % 10 = 0
So 90493-86-0 is a valid CAS Registry Number.

90493-86-0Downstream Products

90493-86-0Relevant articles and documents

Redox-Neutral Selenium-Catalysed Isomerisation of para-Hydroxamic Acids into para-Aminophenols

Chuang, Hsiang-Yu,Schupp, Manuel,Meyrelles, Ricardo,Maryasin, Boris,Maulide, Nuno

, p. 13778 - 13782 (2021/03/31)

A selenium-catalysed para-hydroxylation of N-aryl-hydroxamic acids is reported. Mechanistically, the reaction comprises an N?O bond cleavage and consecutive selenium-induced [2,3]-rearrangement to deliver para-hydroxyaniline derivatives. The mechanism is studied through both 18O-crossover experiments as well as quantum chemical calculations. This redox-neutral transformation provides an unconventional synthetic approach to para-aminophenols.

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