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212051-23-5

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212051-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 212051-23-5 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 3 respectively.
Calculate Digit Verification of CAS Registry Number 212051-23:
(8*2)+(7*1)+(6*2)+(5*0)+(4*5)+(3*1)+(2*2)+(1*3)=65
65 % 10 = 5
So 212051-23-5 is a valid CAS Registry Number.

212051-23-5Relevant articles and documents

Preparation and reaction of 4-methoxybenzyl (MPM) and 3,4- dimethoxybenzyl (DMPM) perfluoroimidates

Nakajima, Noriyuki,Saito, Miho,Ubukata, Makoto

, p. 5565 - 5568 (1998)

We have succeeded in one-pot preparation of perfluoroimidates at -78 °C by employing the dehydration of perfluoroamide under the 'activated' dimethyl sulfoxide (DMSO) species followed by in situ nitrile trapping with alcohols. 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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