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128256-13-3

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128256-13-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128256-13-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,5 and 6 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128256-13:
(8*1)+(7*2)+(6*8)+(5*2)+(4*5)+(3*6)+(2*1)+(1*3)=123
123 % 10 = 3
So 128256-13-3 is a valid CAS Registry Number.

128256-13-3Relevant academic research and scientific papers

Method for enantioselective synthesis of phosphorus-stereogenic phosphines

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Page/Page column 30, (2012/06/16)

The present invention relates to a process for preparing an enantioenriched phosphorus-stereogenic, tertiary phosphine. Secondary phosphines are contacted with an alkyl halide and base in the presence of a chiral metal catalyst thereby producing the enantioenriched phosphorus-stereogenic, tertiary phosphine for subsequent use in homogeneous catalysis reactions.

METHOD FOR ENANTIOSELECTIVE SYNTHESIS OF PHOSPHORUS-STEREOGENIC PHOSPHINES

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Page/Page column 58-60, (2008/06/13)

The present invention relates to a process for preparing an enantioenriched phosphorus-stereogenic, tertiary phosphine. Secondary phosphines are contacted with an alkyl halide and base in the presence of a chiral metal catalyst thereby producing the enantioenriched phosphorus-stereogenic, tertiary phosphine for subsequent use in homogeneous catalysis reactions.

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