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173657-53-9

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173657-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 173657-53-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,6,5 and 7 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 173657-53:
(8*1)+(7*7)+(6*3)+(5*6)+(4*5)+(3*7)+(2*5)+(1*3)=159
159 % 10 = 9
So 173657-53-9 is a valid CAS Registry Number.

173657-53-9Downstream Products

173657-53-9Relevant articles and documents

Quinine as chiral discriminator for determination of enantiomeric excess of diethyl 1,2-dihydroxyalkanephosphonates

Maly, Alina,Lejczak, Barbara,Kafarski, Pawel

, p. 1019 - 1024 (2003)

Quinine was used as a 31P NMR shift reagent for the determination of the enantiomeric excess of diethyl 1,2-dihydroxyethanephosphonates obtained either by chemical or biocatalytic synthesis. Sharpless asymmetric dihydroxylation of diethyl trans

Stereoselective synthesis of dihydroxyphosphonates via asymmetric dihydroxylation of unsaturated phosphonate esters: Synthesis of hydroxyaminophosphonates via cyclic sulfites

Lohray, B. B.,Maji, D. K.,Nandanan, E.

, p. 1023 - 1025 (2007/10/03)

Unsaturated phosphonate esters (1) have been subjected to osmium tetroxide catalyzed asymmetric dihydroxylation (AD) using dihydroquinidine and dihydroquinine derivatives as chiral ligands to furnish the optically active diols (2) which have been converte

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