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105250-74-6

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105250-74-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 105250-74-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,2,5 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 105250-74:
(8*1)+(7*0)+(6*5)+(5*2)+(4*5)+(3*0)+(2*7)+(1*4)=86
86 % 10 = 6
So 105250-74-6 is a valid CAS Registry Number.

105250-74-6Downstream Products

105250-74-6Relevant articles and documents

Preparation of chlorosyringols and chloropyrogallols - Components of pulp bleaching effluents

Smith,Wearne,Wallis

, p. 921 - 930 (2007/10/03)

The preparation and properties of chlorosyringols and chloropyrogallols, components of pulp bleaching effluents, and their acetates are given. The compounds are obtained mainly by direct chlorination of both phenols or of syringol acetate with various chlorinating reagents. 5-Chloropyrogallol and 4,5-dichloropyrogallol were the products of demethylation of 5-chloro-3-methoxycatechol acetate and 4,5-dichloro-3-methoxycatechol acetate, respectively. The acetates of all ten chloro compounds were separated by gas chromatography. Electron impact mass spectra and 1H and 13C NMR data for the acetates are given.

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