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14994-77-5

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14994-77-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 14994-77-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,9,9 and 4 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 14994-77:
(7*1)+(6*4)+(5*9)+(4*9)+(3*4)+(2*7)+(1*7)=145
145 % 10 = 5
So 14994-77-5 is a valid CAS Registry Number.

14994-77-5Upstream product

14994-77-5Relevant articles and documents

Phenylureas. Part 1. Mechanism of the basic hydrolysis of phenylureas

Laudien,Mitzner

, p. 2226 - 2229 (2007/10/03)

The mechanism of the hydrolytic decomposition of phenylureas in basic media in the pH range 12 to 14 is investigated. In this pH range a levelling of the rate-pH curve is observed as well as a change of the substituent influence on the hydrolysis rate. These experimental findings suggest the formation of an unreactive side product of the phenylurea in a parasitic side equilibrium at sufficiently high pH. The urea dissociates at the aryl-NH group to give its conjugate base. For the hydrolytic decomposition of phenylureas an addition-elimination mechanism is proposed as has been established for the alkaline hydrolysis of carboxylic acid esters and amides.

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