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84228-97-7

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84228-97-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84228-97-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,2,2 and 8 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 84228-97:
(7*8)+(6*4)+(5*2)+(4*2)+(3*8)+(2*9)+(1*7)=147
147 % 10 = 7
So 84228-97-7 is a valid CAS Registry Number.

84228-97-7Downstream Products

84228-97-7Relevant articles and documents

New Methods and Reagents in Organic Synthesis. 26. Reductive Desulfonylation of α-Sulfonylacetates

Kuo, Ying-Che,Aoyama, Toyohiko,Shioiri, Takayuki

, p. 2787 - 2792 (2007/10/02)

α-Acyl-benzylsulfonyldiazomethanes (2a-d) have been converted to α-benzylsulfonyl-α-substituted-acetic acids (7a-d) by means of the Wolff rearrangement.Reductive removal of the benzylsulfonyl group of 7b-d can be achieved by the use of sodium-ethanol in tetrahydrofuran. α-Benzylsulfonyl-α-substituted-propionic acids (9a-d), prepared from benzyl α-benzylsulfonyl-α-substituted-acetates (3a-d), were also debenzylsulfonylated under similar reductive conditions.The overall process, in combination with the Arndt-Eistert synthesis of α-sulfonylacetates from acyl chlorides and benzylsulfonyldiazomethane (1), provides a new, safe method for the homologation of carboxylic acids.Keywords-reductive desulfonylation; Wolff rearrangement; sodium amalgam reduction; catalytic debenzylation; sodium-ethanol reduction; methylation; α-substituted propionic acid; α-sulfonylacetate

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