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78388-20-2

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78388-20-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 78388-20-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,3,8 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 78388-20:
(7*7)+(6*8)+(5*3)+(4*8)+(3*8)+(2*2)+(1*0)=172
172 % 10 = 2
So 78388-20-2 is a valid CAS Registry Number.

78388-20-2Relevant articles and documents

REACTIONS OF N-SULFINYL-p-TOLUENESULFONAMIDE WITH ALCOHOLS

McFarland, John W.,Schut, Dirk,Zwanenburg, Binne

, p. 389 - 393 (1981)

N-Sulfinyl-p-toluenesulfonamide (1) reacted with triaryl- and diarylmethanols to give predominantly N-substituted sulfonamides and SO2 presumably via carbonium ion intermediates.When carbonium ion forming alcohols, such as t-BuOH and Ph2C(Me)OH, were used, the predominant products were alkenes and p-toluenesulfonamide.Allylic alcohols afforded N-substituted sulfonamides, along with dienes and p-toluenesulfonamide.Alcohols wich could not predictably give relatively stable intermediate carbonium ions, gave either dialkyl sulfites or dialkyl ethers, along with p-toluenesulfonamide.In one case, namely with 9-phenylfluorenol, the 1:1 adduct with 1 (an amidosulfite) was isolated.A mechanism for the reaction is proposed.

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