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173449-89-3

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173449-89-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 173449-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,4,4 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 173449-89:
(8*1)+(7*7)+(6*3)+(5*4)+(4*4)+(3*9)+(2*8)+(1*9)=163
163 % 10 = 3
So 173449-89-3 is a valid CAS Registry Number.

173449-89-3Relevant articles and documents

Synthesis and Prior Misidentification of 4- tert-Butyl-2,6-dinitrobenzaldehyde

Martin, Daniel J.,Mercado, Brandon Q.,Mayer, James M.

, p. 12172 - 12176 (2019)

Substituted 2,6-dinitrobenzaldehydes are valuable synthetic precursors and have been prepared by several methods. We report here that one reported synthetic method actually forms the 3,5-dinitro isomer, 4-tert-butyl-3,5-dinitrobenzaldehyde, instead of the

On the illusive nature of o-formylazobenzenes: Exploiting the nucleophilicity of the azo group for cyclization to indazole derivatives

Peters, Maike V.,Stoll, Ragnar S.,Goddard, Richard,Buth, Gernot,Hecht, Stefan

, p. 7840 - 7845 (2007/10/03)

(Chemical Equation Presented) Facile rearrangement of azobenzenes is shown to occur in cases where the azo group is placed in the ortho position to carbonyl electrophiles to furnish the indazole skeleton. While this study demonstrates the illusive nature

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