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138815-29-9

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138815-29-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138815-29-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,1 and 5 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 138815-29:
(8*1)+(7*3)+(6*8)+(5*8)+(4*1)+(3*5)+(2*2)+(1*9)=149
149 % 10 = 9
So 138815-29-9 is a valid CAS Registry Number.

138815-29-9Relevant articles and documents

1,2,3-Triazol-1-imines. 1. The Synthesis and Lead Tetraacetate Oxidation of Biacetyl Benzoylhydrazone Arylhydrazones to the Novel 2-Aryl-N-benzoyl-4,5-dimethyl-1,2,3-triazol-1-imines

Hadjiantoniou-Maroulis, C. P.,Maroulis, A. J.,Terzis, A.,Mentzafos, D.

, p. 2252 - 2257 (2007/10/02)

The synthesis and the Pb(OAc)4 oxidation of the mixed bishydrazones of biacetyl 7 was studied.The formation of the novel N-benzoyl-1,2,3-triazol-1-imines 9 from the oxidation of 7 provided support to the proposed in the past mechanism for the oxidation of bis-aroylhydrazones of α-dicarbonyl compounds 4.Thermolysis and photolysis of 9a in DMSO was carried out.The results suggested that benzoylnitrene was formed in the photochemical reaction, and therefore compounds such as 9 could serve as non-azide aroyl nitrene precursors.For 9a the results of the X-ray analysis were correlated with charge densities and bond orders gleaned by the MNDO method.Product 9d was alternatively synthesized by the addition of photochemically generated bezoylnitrene to the 1,2,3-triazole 21.

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