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26930-21-2

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26930-21-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 26930-21-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,9,3 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 26930-21:
(7*2)+(6*6)+(5*9)+(4*3)+(3*0)+(2*2)+(1*1)=112
112 % 10 = 2
So 26930-21-2 is a valid CAS Registry Number.

26930-21-2Downstream Products

26930-21-2Relevant articles and documents

Effects of amine nature and nonleaving group substituents on rate and mechanism in aminolyses of 2,4-dinitrophenyl x-substituted benzoates

Um, Ik-Hwan,Kim, Kyung-Hee,Park, Hye-Ran,Fujio, Mizue,Tsuno, Yuho

, p. 3937 - 3942 (2007/10/03)

Second-order rate constants have been measured for the reactions of 2,4-dinitrophenyl X-substituted benzoates (1a-f) with a series of primary amines in 80 mol % H2O/20 mol % DMSO at 25.0 ± 0.1 °C. The Bronsted-type plot for the reactions of 1d with primary amines is biphasic with slopes β1 = 0.36 at the high pKa region and β2 = 0.78 at the low pKa region and the curvature center at pKa° = 9.2, indicating that the reaction proceeds through an addition intermediate with a change in the rate-determining step as the basicity of amines increases. The corresponding Bro nsted-type plot for the reactions with secondary amines is also biphasic with β1 = 0.34, β2 = 0.74, and pKa° = 9.1, indicating that the effect of amine nature on the reaction mechanism and pKa° is insignificant. However, primary amines have been found to be less reactive than isobasic secondary amines. The microscopic rate constants associated with the aminolysis have revealed that the smaller k 1 for the reactions with primary amines is fully responsible for their lower reactivity. The electron-donating substituent in the nonleaving group exhibits a negative deviation from the Hammett plots for the reactions of 1a-f with primary and secondary amines, while the corresponding Yukawa-Tsuno plots are linear. The negative deviation has been ascribed to stabilization of the ground state of the substrate through resonance interaction between the electron-donating substituent and the carbonyl functionality.

Process for the preparation of 2-aryl-5-(perfluoroalkyl) pyrrole compounds from N-(perfluoroalkylmethyl) arylimidoyl chloride compounds

-

, (2008/06/13)

There is provided a process for the preparation of 2-aryl-5-(perfluoroalkyl)pyrrole compounds from N-(perfluoroalkylmethyl)arylimidoyl chloride compounds. The 2-aryl-5-(perfluoroalkyl)pyrrole compounds are useful for the control of insect and acarid pests

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