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74825-01-7

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74825-01-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74825-01-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,8,2 and 5 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 74825-01:
(7*7)+(6*4)+(5*8)+(4*2)+(3*5)+(2*0)+(1*1)=137
137 % 10 = 7
So 74825-01-7 is a valid CAS Registry Number.

74825-01-7Downstream Products

74825-01-7Relevant articles and documents

Nucleophilic Character of the Alkyl Radicals. 19. Absolute Rate Constants in the Homolytic Alkylation of Protonated Heteroaromatic Bases by n-Butyl and tert-Butyl Radicals

Citterio, Attilio,Minisci, Francesco,Franchi, Valeria

, p. 4752 - 4757 (2007/10/02)

The rate constants for the homolytic alkylation of protonated heteroaromatic bases (quinoline, pyridine, and 4-cyano-, 4-acetyl-, 4-methyl-, and 4-methoxypyridine) by n-butyl and tert-butyl radicals were measured at 57 deg C by competition of the aromatic addition with the alkyl radical oxidation by Cu2+ salts (for which the rates are known).With the more activated substrates (quinoline and 4-cyano- and 4-acetylpyridine) the tert-butyl radical is significantly more reactive then the n-butyl radical, clearly showing that polar effects are more important than steric and enthalpic effects in determining the reaction rates.The reversibility of the alkylation by the tert-butyl radical is discussed.

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