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883857-04-3

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883857-04-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 883857-04-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,3,8,5 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 883857-04:
(8*8)+(7*8)+(6*3)+(5*8)+(4*5)+(3*7)+(2*0)+(1*4)=223
223 % 10 = 3
So 883857-04-3 is a valid CAS Registry Number.

883857-04-3Relevant articles and documents

Practical synthesis of chiral vinylphosphine oxides by direct nucleophilic substitution. Stereodivergent synthesis of aminophosphine ligands

Oliana, Marco,King, Frank,Horton, Peter N.,Hursthouse,Hii, King Kuok

, p. 2472 - 2479 (2007/10/03)

A practical synthesis of optically pure alkylphenylvinylphosphine oxides is described, utilizing a nucleophilic displacement at phosphorus to install the vinyl moiety. The products were used to prepare classes of P-stereogenic aminophosphine (PN) and aminohydroxyphosphine (PNO) ligands. Stereocontrol can be exerted at various stages of the synthesis, to provide specific combinations of chirality in the final product. The effect of the stereogenic phosphorus and match-mismatch of chiralities of PNO ligands were examined in the asymmetric ruthenium-catalyzed hydrogen transfer reduction of three aryl ketones.

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