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870197-45-8

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870197-45-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 870197-45-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,0,1,9 and 7 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 870197-45:
(8*8)+(7*7)+(6*0)+(5*1)+(4*9)+(3*7)+(2*4)+(1*5)=188
188 % 10 = 8
So 870197-45-8 is a valid CAS Registry Number.

870197-45-8Relevant articles and documents

Kinetic resolution of racemic ferrocenylphosphine compounds by enantioselective oxidation using cyclic selenoxides having a chiral ligand

Miyake, Yoshihiro,Yamauchi, Akiyoshi,Nishibayashi, Yoshiaki,Uemura, Sakae

, p. 381 - 387 (2007/10/03)

Cyclic selenoxides having an optically active binaphthyl skeleton work as the reagents for enantioselective oxidation of phosphines to the corresponding phosphine oxides. Treatment of a racemic 2-oxazolin-2-ylferrocenylphosphine with one of the selenoxides in carbon tetrachloride in the presence of phenol affords the corresponding phosphine oxide together with the unreacted starting phosphine, both with moderate enantioselectivities (the phosphine oxide, up to 13% ee; the phosphine, up to 29% ee).

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