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29771-48-0

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29771-48-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29771-48-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,7,7 and 1 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 29771-48:
(7*2)+(6*9)+(5*7)+(4*7)+(3*1)+(2*4)+(1*8)=150
150 % 10 = 0
So 29771-48-0 is a valid CAS Registry Number.

29771-48-0Downstream Products

29771-48-0Relevant articles and documents

A Dimethyl Sulfoxide-mediated Oxidation of Arylalkyl and Alkyl Alcohols to Corresponding Aldehydes and Ketones via Tropolonyl Ethers

Takeshita, Hitoshi,Mametsuka, Hiroaki,Matsuo, Norihide

, p. 1137 - 1139 (1982)

The arylmethyl and diarylmethyl ethers of tropolones were oxidized to the corresponding carbonyl derivatives by heating in dimethyl sulfoxide.The free alcohols were oxidized at a much slower rate, suggesting that some sort of DMSO-linked intermediates are responsible for the oxidation.Inertness of free alcohols was proven by means of the cross-over experiments, including deuterium-labelling.This oxidation was applicable to alkyl ethers, but not to alkenyl ethers, which are known to cause the Claisen-rearrangement.

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