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140840-12-6

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140840-12-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140840-12-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,8,4 and 0 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 140840-12:
(8*1)+(7*4)+(6*0)+(5*8)+(4*4)+(3*0)+(2*1)+(1*2)=96
96 % 10 = 6
So 140840-12-6 is a valid CAS Registry Number.

140840-12-6Relevant articles and documents

Synthesis and Characterization of Unusual Tetraaminoalkenes (Enetetramines)

Cetinkaya, Engin,Hitchcock, Peter B.,Jasim, Hatam A.,Lappert, Michael F.,Spyropoulos, Kostas

, p. 561 - 568 (2007/10/02)

Two general routes are described for the synthesis of the title compounds from the reaction of either (A) the dimethyl acetal of N,N-dimethylformamide and an appropriate N,N'-bis(secondary amine), or (B) sodium hydride and a 4,5-dihydroimidazolium or tetr

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