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31255-13-7

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31255-13-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31255-13-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,2,5 and 5 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 31255-13:
(7*3)+(6*1)+(5*2)+(4*5)+(3*5)+(2*1)+(1*3)=77
77 % 10 = 7
So 31255-13-7 is a valid CAS Registry Number.

31255-13-7Relevant articles and documents

Fast Atom Bombardment Mass Spectra of some N,N'-Tetramethyl Diazacoronands Diiodides

Baranowska, Elzbieta,Ostaszewski, Ryszard,Jurczak, Janusz,Fokkens, Roel H.,Nibbering, Nico M. M.

, p. 431 - 434 (1989)

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High-pressure Approach to the Synthesis of N,N'-Dimethyl Diazacoronands

Jurczak, Janusz,Ostaszewski, Ryszard,Salanski, Piotr

, p. 184 - 185 (1989)

α,ω-Tertiary diamines react under high pressure with α,ω-di-iodo compounds to give the cyclic bis-quaternary salts in almost quantitative yields and their subsequent demethylation with triphenylphosphine affords N,N'-dimethyl diazacoronands in high yield.

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