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676581-54-7

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676581-54-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 676581-54-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,6,5,8 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 676581-54:
(8*6)+(7*7)+(6*6)+(5*5)+(4*8)+(3*1)+(2*5)+(1*4)=207
207 % 10 = 7
So 676581-54-7 is a valid CAS Registry Number.

676581-54-7Upstream product

676581-54-7Downstream Products

676581-54-7Relevant articles and documents

Structural studies of 2-methyl-7-substituted pyrazolo[1,5-a]pyrimidines

Frizzo, Clarissa P.,Martins, Marcos A.P.,Marzari, Mara R. B.,Campos, Patrick T.,Claramunt, Rosa M.,Garcia, M. Angeles,Sanz, Dionisia,Alkorta, Ibon,Elguero, Jose

, p. 1259 - 1268 (2010)

Six pyrazolo[1,5-a]pyrimidines bearing a 7-trifluoromethyl (three compounds), a 7-trichloromethyl (two compounds), and a 7-ethoxycarbonyl (one compound) have been structurally characterized. The new X-ray structures of 2-methyl-5-(p-bromophenyl)-7-trifluoromethylpyrazolo[1,5-a]pyrimidine (3) and 2-methyl-7-trichloromethylpyrazolo[1,5-a]pyrimidine (4) are reported. The combined use of GIAO/B3LYP/6-311++G(d,p) calculations with NMR spectroscopy in solution and in the solid state allows to establish some general rules that can be useful for characterizing related compounds. Compounds 3 and 4 present in the solid-state interesting intra- and intermolecular halogen bonds.

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