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51686-79-4

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51686-79-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51686-79-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,6,8 and 6 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 51686-79:
(7*5)+(6*1)+(5*6)+(4*8)+(3*6)+(2*7)+(1*9)=144
144 % 10 = 4
So 51686-79-4 is a valid CAS Registry Number.

51686-79-4Relevant articles and documents

Thermal Stability Studies on a Homologous Series of Nitroarenes

Oxley, Jimmie C.,Smith, James L.,Ye, Hong,McKenney, Robert L.,Bolduc, Paul R.

, p. 9593 - 9602 (2007/10/02)

The thermal stabilities of a number of nitroarenes were examined in solution and in condensed phase.In general, increasing the number of nitro groups decreased thermal stability.Changing the substituent on 1-X-2,4,6-trinitrobenzene from X = H to NH2 to CH3 to OH accelerated decomposition; this effect was attributed to increased ease of intramolecular proton transfer to an ortho nitro group, thus weakening the carbon-nitrogen bond.In solution, the effect of increasing substitution from n = 1 to n = 3 on Xn(NO2)3C6H3-n was uniformly that of decreasing the thermal stability of the species.However, in condensed phase, results suggested that crystal habit may be more important than molecular structure; for X = Br, CH3, and NH2, the more substituted species was the more stable.

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