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98945-48-3

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98945-48-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 98945-48-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,9,4 and 5 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 98945-48:
(7*9)+(6*8)+(5*9)+(4*4)+(3*5)+(2*4)+(1*8)=203
203 % 10 = 3
So 98945-48-3 is a valid CAS Registry Number.

98945-48-3Downstream Products

98945-48-3Relevant articles and documents

The Synthesis and Ionization of Some Derivatives of 1-Biphenylenol

Hine, Jack,Hahn, Soonkap,Miles, David E.,Ahn, Kyunghye

, p. 5092 - 5096 (2007/10/02)

2,7-Dimethyl-1,8-biphenylenediol has been synthesized from 2-methyl-5-nitrophenol in nine steps. 1,5-Biphenylenediol has been prepared by dimerization of 3-methoxybenzyne, separation of isomers, and demethylation. 8-Methoxy-1-biphenylenol has been made by the partial demethylation of 1,8-dimethoxybiphenylene.Ionization constants (pK1 8.04, pK2 11.47, pK1 8.35, pK2 9.97, and pK 9.15, respectively) have been determined for these compounds and for 1,8-biphenylenediol (pK1 8.01, pK2 11.00) and 1- biphenylenol (pK 8.64) by ultraviolet spectrophotomeric measurements in aqueous solution.

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