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90843-34-8

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90843-34-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90843-34-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,8,4 and 3 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 90843-34:
(7*9)+(6*0)+(5*8)+(4*4)+(3*3)+(2*3)+(1*4)=138
138 % 10 = 8
So 90843-34-8 is a valid CAS Registry Number.

90843-34-8Downstream Products

90843-34-8Relevant articles and documents

Purified mCPBA, a Useful Reagent for the Oxidation of Aldehydes

Horn, Alexander,Kazmaier, Uli

, p. 2531 - 2536 (2018/03/21)

Purified mCPBA is a useful reagent for the oxidation of several classes of aldehyde. Although linear unbranched aliphatic aldehydes are oxidized to the corresponding carboxylic acids, α-branched ones undergo Baeyer–Villiger oxidation to formates. α-Branched α,β-unsaturated aldehydes provide enolformates and/or epoxides, which can be saponified to α-hydroxy ketones with shortening of the carbon chain by 1 carbon. Unbranched α,β-unsaturated aldehydes undergo an interesting Baeyer–Villiger oxidation/epoxidation/formate migration/BV oxidation cascade, which results in formyl-protected hydrates with an overall loss of two carbon atoms.

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