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66933-51-5

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66933-51-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66933-51-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,9,3 and 3 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 66933-51:
(7*6)+(6*6)+(5*9)+(4*3)+(3*3)+(2*5)+(1*1)=155
155 % 10 = 5
So 66933-51-5 is a valid CAS Registry Number.

66933-51-5Downstream Products

66933-51-5Relevant articles and documents

Potential Acyl-transfer Agents. Reactions of N-Acyl-2-pyridinecarboxamides with Nucleophiles

Morkved, Eva H.,Cronyn, Marshall W.

, p. 381 - 388 (2007/10/02)

A fast reaction is obserwed between a series of N-acyl-2-pyridinecarboxamides and cyclopentylamine or pyrrolidine.Most of the acylamides react exclusively at the pyridine-2-carbonyl group.The selectivity of these reactions is explained by the reaction of the pyridine-nitrogen as a base towards the external nucleophile in a five-ring transition state.The acylamides undergo slow reactions with 4-methylaniline, methanol or water.Several reaction paths are observed with these less reactive nucleophiles.An intramolecular acyl group transfer prior to the reaction with an external nucleophile is indicated for three of the N-acylamides which have an N,N-dialkylamino substituent in the pyridine-4-position.Nucleophilic attack occurs predominantly at the N-acyl group of these three compounds which are moderately active acyl-transfer agents.

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