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428835-78-3

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428835-78-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 428835-78-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,8,8,3 and 5 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 428835-78:
(8*4)+(7*2)+(6*8)+(5*8)+(4*3)+(3*5)+(2*7)+(1*8)=183
183 % 10 = 3
So 428835-78-3 is a valid CAS Registry Number.

428835-78-3Downstream Products

428835-78-3Relevant articles and documents

Highly regioselective synthesis of trifluoromethyl derivatives of pyrazolo[1,5-a]pyrimidines bearing fused cycloalkane rings using (2-ethoxycycloalkenyl)-2,2,2-trifluoroethanones

Emelina, Elena E.,Petrov, Aleksander A.,Selivanov, Stanislav I.,Nelyubina, Yulia V.,Antipin, Mikhail Yu.

experimental part, p. 861 - 869 (2009/12/30)

8-Trifluoromethyl-6,7-dihydro-5H-1,4,8a-triaza-s-indacene and 9-trifluoromethyl-5,6,7,8-tetrahydropyrazolo[5,1-b]quinazolines were efficiently generated by condensation of 5(3)-aminopyrazoles with (2-ethoxycycloalkenyl)-2,2,2-trifluoroethanones and isolated in excellent yields. The regiochemistry of the prepared compounds was established by 1H, 13C and 19F NMR spectroscopy and X-ray diffraction analysis.

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