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99854-25-8

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99854-25-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99854-25-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,5 and 4 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 99854-25:
(7*9)+(6*9)+(5*8)+(4*5)+(3*4)+(2*2)+(1*5)=198
198 % 10 = 8
So 99854-25-8 is a valid CAS Registry Number.

99854-25-8Downstream Products

99854-25-8Relevant articles and documents

Preparation and properties of chlorinated syringic acids, acetosyringones, acetoguaiacones and methoxy-p-hydroquinones components of pulp bleaching effluents

Smith,Wearne,Wallis

, p. 69 - 80 (2007/10/03)

A range of chlorinated phenols which serve as standards for compounds occurring in effluents from the bleaching of wood pulps with chlorine-containing reagents has been prepared. The chlorinated phenols include chlorosyringic acids, chloroacetosyringones, chloroacetoguaiacones, 5-chloro-2-methoxy-p-hydroquinone and chloro-2,6-dimethoxy-p-hydroquinones. With the exception of the ring-chlorinated acetoguaiacones which were prepared by reaction of chlorovanillin acetates with diazomethane, the compounds were obtained by direct chlorination of appropriate phenols or their acetates. Gas chromatographic and mass spectrometric data for the acetylated phenols are given.

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