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343629-68-5

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343629-68-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 343629-68-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,3,6,2 and 9 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 343629-68:
(8*3)+(7*4)+(6*3)+(5*6)+(4*2)+(3*9)+(2*6)+(1*8)=155
155 % 10 = 5
So 343629-68-5 is a valid CAS Registry Number.

343629-68-5Relevant articles and documents

An efficient acid hydrolysis of the ether bond assisted by the neighbouring benzamide group. Part 3

Arcelli, Antonio,Porzi, Gianni,Rinaldi, Samuele,Sandri, Sergio

, p. 296 - 301 (2007/10/03)

The acid hydrolytic cleavage of 1 to 2, assisted by a neighbouring benzamide group, was kinetically investigated in a wide range of HCl concentrations (1.67 - 8.7 M) and at various temperatures. Kinetic measurements were performed also in the presence of LiCl at constant ionic strength (I = 5 M). The rate determining step of the acid hydrolysis of 1 was recognized through the investigation of the acid catalyzed cyclization of 3 to 2. Thermodynamic activation parameters were calculated and the experimetal data discussed. The participation of the neighbouring benzamide group was evaluated to be about 7.3 * 103.

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