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121824-42-8

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121824-42-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121824-42-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,8,2 and 4 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 121824-42:
(8*1)+(7*2)+(6*1)+(5*8)+(4*2)+(3*4)+(2*4)+(1*2)=98
98 % 10 = 8
So 121824-42-8 is a valid CAS Registry Number.

121824-42-8Relevant articles and documents

Syntheses of Sulfinylmethyl Ethers and Conversion of these into Halomethyl and Acyloxymethyl Ethers

Antonsen, Oeyvind,Benneche, Tore,Undheim, Kjell

, p. 515 - 523 (2007/10/02)

Halomethyl ethers can be prepared from sulfinyl ethers by cleavage of the carbon-sulfur bond with thionyl chloride, acetyl chloride or trimethylsilyl halides.In the presence of alkenyl groups in the substrate, acetyl chloride is the reagent of choice.Trifluoroacetic anhydride reacts in the same manner to form the trifluoroacetoxymethyl ether.With acetic anhydride, catalysis by methanesulfonic acid was required.At elevated temperatures in the presence of sodium acetate the products were formed by the Pummerer rearrangement.

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