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212051-26-8

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212051-26-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 212051-26-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,0,5 and 1 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 212051-26:
(8*2)+(7*1)+(6*2)+(5*0)+(4*5)+(3*1)+(2*2)+(1*6)=68
68 % 10 = 8
So 212051-26-8 is a valid CAS Registry Number.

212051-26-8Relevant articles and documents

Activated dimethyl sulfoxide dehydration of amide and its application to one-pot preparation of benzyl-type perfluoroimidates

Nakajima, Noriyuki,Saito, Miho,Ubukata, Makoto

, p. 3561 - 3577 (2007/10/03)

Various types of primary amides were treated under an activated dimethyl sulfoxide (DMSO) species, (COCl)2-DMSO and Et3N, as a dehydrating agent to obtain nitriles in excellent yield. This dehydration system was extended to a one-pot preparation of perfluoroimidates via volatile perfluoronitriles from perfluoroamides. Fifteen benzyl-type perfluoroimidates can be prepared in 70-90% yield as more stable imidates than the trichloro analogue. MPM- and DMPM-perfluoroimidates can be used to protect alcohols in place of the trichloroacetimidate with excellent chemical properties and in comparable yields.

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