Cas 281667-54-7,(R)-tert-butylmethyl(p-toluenesulfonyloxymethyl)phosphine-borane

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Check Digit Verification of cas no

The CAS Registry Mumber 281667-54-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,1,6,6 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 281667-54:
(8*2)+(7*8)+(6*1)+(5*6)+(4*6)+(3*7)+(2*5)+(1*4)=167
167 % 10 = 7
So 281667-54-7 is a valid CAS Registry Number.

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281667-54-7Relevant academic research and scientific papers

Improved synthetic routes to methylene-bridged P-chiral diphosphine ligands via secondary phosphine-boranes

Imamoto, Tsuneo,Tamura, Ken,Ogura, Tomokazu,Ikematsu, Yui,Mayama, Daisuke,Sugiya, Masashi

scheme or table, p. 1522 - 1528 (2010/10/21)

Improved methods for the preparation of methylene-bridged diphosphine ligands are described. Both enantiomers of the key intermediate tert-butylmethylphosphine-borane were prepared via resolution or by the conversion of one enantiomer into the opposite en

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