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917893-90-4

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917893-90-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 917893-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,7,8,9 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 917893-90:
(8*9)+(7*1)+(6*7)+(5*8)+(4*9)+(3*3)+(2*9)+(1*0)=224
224 % 10 = 4
So 917893-90-4 is a valid CAS Registry Number.

917893-90-4Relevant articles and documents

StePHOX, a new family of optically active, tunable phosphine-oxazoline ligands: syntheses and applications

Trudeau, Stéphane,Morken, James P.

, p. 11470 - 11476 (2007/10/03)

A new class of optically active phosphine-oxazoline ligands has been synthesized wherein backbone chirality of these new ligands is installed by a Sharpless asymmetric dihydroxylation. Different backbone protecting groups as well as different substitution patterns on the oxazoline ring were studied. These ligands were tested in allylic substitution (with ee's up to 97%) and asymmetric Tsuji allylation.

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