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113710-50-2

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113710-50-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 113710-50-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,7,1 and 0 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 113710-50:
(8*1)+(7*1)+(6*3)+(5*7)+(4*1)+(3*0)+(2*5)+(1*0)=82
82 % 10 = 2
So 113710-50-2 is a valid CAS Registry Number.

113710-50-2Relevant articles and documents

Pyrylium Compounds. 36. Substituted Benzoic Acid Esters from 2,4,6-Triarylpyrylium Salts and α-Ketocarboxylic Acid Esters

Zimmermann, Thomas,Fischer, Gerhard W.

, p. 499 - 510 (2007/10/02)

2,4,6-Triarylpyrylium salts 1 react with α-ketocarboxylic acid esters 2 in the presence of two equivalents of an appropriate condensing agent (e.g. dialkylamine salts of weak acids, triethylamine/acetic acid, or sodium acetate) to give 2-aroyl-3,5-diarylbenzoic acid esters 3.However, using only one equivalent of the condensing agent, the formation of 3,5-diarylbenzoic acid esters 5 predominates.Alkaline saponification of the new esters 3 and 5 yields the corresponding substituted benzoic acids 4 and 6, respectively. - I.r., u.v., n.m.r. and mass spectroscopic data of the novel products 3-6 are reported.

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