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1610621-75-4

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1610621-75-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1610621-75-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,0,6,2 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1610621-75:
(9*1)+(8*6)+(7*1)+(6*0)+(5*6)+(4*2)+(3*1)+(2*7)+(1*5)=124
124 % 10 = 4
So 1610621-75-4 is a valid CAS Registry Number.

1610621-75-4Relevant articles and documents

Reactions of polyfluorochalcones with o- and p-phenylenediamines. Synthesis and intramolecular transformations of polyfluorinated 2,4-diaryl-2,3-dihydrobenzo-1H-1,5-diazepines

Borodina,Orlova

, p. 253 - 260 (2015/04/14)

Polyfluorochalcones react with o-phenylenediamine in ethanol and 2-propanol in the presence of triethylamine or benzyltriethylammonium chloride (TEBAC) affording polyfluorinated 2,4-diaryl-2,3-dihydrobenzo-1H-1,5-diazepines. Along with the latter in the presence of triethylamine Michael aza-adducts presumably formed, and at the use of TEBAC in 2-propanol products of intramolecular cyclization and rearrangement of benzo-1,5-diazepines, dihydrobenzimidazo[1,2-a]quinolines were obtained. The reactions of polyfluorochalcones with p-phenylenediamine in ethanol or DMF proceed mostly with the substitution of the para-fluorine atom in the perfluorophenyl rings.

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