Cas 1440038-40-3,C18H18N4O3S2

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Check Digit Verification of cas no

The CAS Registry Mumber 1440038-40-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,4,0,0,3 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1440038-40:
(9*1)+(8*4)+(7*4)+(6*0)+(5*0)+(4*3)+(3*8)+(2*4)+(1*0)=113
113 % 10 = 3
So 1440038-40-3 is a valid CAS Registry Number.

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1440038-40-3Relevant academic research and scientific papers

Selective methylation of NH-containing heterocycles and sulfonamides using n, N -dimethylformamide dimethylacetal based on calculated pKa Measurements

Fairley, Gary,Hall, Catherine,Greenwood, Ryan

, p. 570 - 574 (2013)

The use of N,N-dimethylformamide dimethylacetal (DMF-DMA) as a suitable methylating agent for the methylation of NH-containing groups and heterocycles has been investigated. Use of ReactArray and calculated pKa measurements have allowed additional helpful information to be collated to determine optimum reaction conditions for a variety of substrates.

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