Cas 104891-77-2,1-Cyclohexyl-2-(5-oxo-5H-5λ<sup>5</sup>-dibenzophosphol-5-yl)-butan-1-one

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Check Digit Verification of cas no

The CAS Registry Mumber 104891-77-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,8,9 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 104891-77:
(8*1)+(7*0)+(6*4)+(5*8)+(4*9)+(3*1)+(2*7)+(1*7)=132
132 % 10 = 2
So 104891-77-2 is a valid CAS Registry Number.

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104891-77-2Relevant academic research and scientific papers

HORNER-WITTIG REACTIONS USING DIBENZOPHOSPHOLE OXIDES: STEREOCHEMICALLY CONTROLLED REDUCTION OF KETONES

Elliott, Jason,Warren, Stuart

, p. 645 - 648 (1986)

Reduction of ketones having an α-dibenzophosphole-5-oxide group with NaBH4, L-Selectride, or Superhydride gives threo Horner-Wittig intermediates and hence E-alkenes, while NaBH4/CeCl3 gives erythro intermediates and hence Z-alkenes.

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