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423169-19-1

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423169-19-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 423169-19-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,3,1,6 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 423169-19:
(8*4)+(7*2)+(6*3)+(5*1)+(4*6)+(3*9)+(2*1)+(1*9)=131
131 % 10 = 1
So 423169-19-1 is a valid CAS Registry Number.

423169-19-1Relevant articles and documents

Synthesis of new proton-ionizable crown ether compounds containing substituted 1H-pyridin-4-one subcyclic units

Huszthy, Peter,Kertesz, Julia,Bradshaw, Jerald S.,Izatt, Reed M.,Ty Redd

, p. 1259 - 1264 (2007/10/03)

Five novel pyridono-18-crown-6 (10-14) and two new benzyloxy-substituted pyridino-18-crown-6 (15 and 16) ligands have been prepared. By the catalytic hydrogenative removal of the benzyl group from the benzyloxy moiety at position 4 of the pyridine ring of

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