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209850-71-5

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209850-71-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209850-71-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,8,5 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 209850-71:
(8*2)+(7*0)+(6*9)+(5*8)+(4*5)+(3*0)+(2*7)+(1*1)=145
145 % 10 = 5
So 209850-71-5 is a valid CAS Registry Number.

209850-71-5Relevant articles and documents

Synthesis of chiral bis(dihydrooxazolylphenyl)oxalamides, a new class of tetradentate ligands for asymmetric catalysis

End, Nicole,Macko, Ludwig,Zehnder, Margareta,Pfaltz, Andreas

, p. 818 - 824 (2007/10/03)

Enantiomerically pure N,N'-bis[2-(4,5-dihydrooxazol-2-yl)phenyl]oxalamides are readily prepared from 2-(2-aminophenyl)-4,5-dihydrooxazoles and oxalyl chloride. The structures of the corresponding nickel and copper complexes were determined by X-ray analys

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