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664995-23-7

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664995-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 664995-23-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,9,9 and 5 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 664995-23:
(8*6)+(7*6)+(6*4)+(5*9)+(4*9)+(3*5)+(2*2)+(1*3)=217
217 % 10 = 7
So 664995-23-7 is a valid CAS Registry Number.

664995-23-7Downstream Products

664995-23-7Relevant articles and documents

Synthesis of Versatile Chiral N,P Ligands Derived from Pyridine and Quinoline

Drury III, William J.,Zimmermann, Nicole,Keenan, Martine,Hayashi, Masahiko,Kaiser, Stefan,Goddard, Richard,Pfaltz, Andreas

, p. 70 - 74 (2007/10/03)

Potent transition-metal complexes for asymmetric catalysis are formed from readily accessible N,P ligands constructed from basic N-heteroaryl building blocks (see structure). Their simple assembly should not be misconstrued: they posses several handles by which to tune both steric and electronic parameters. The potential of these ligands is demonstrated by the high levels of enantioselection they induce in such divergent processes as asymmetric hydrogenation and the Heck reaction.

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