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1071933-20-4

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1071933-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1071933-20-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,7,1,9,3 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1071933-20:
(9*1)+(8*0)+(7*7)+(6*1)+(5*9)+(4*3)+(3*3)+(2*2)+(1*0)=134
134 % 10 = 4
So 1071933-20-4 is a valid CAS Registry Number.

1071933-20-4Downstream Products

1071933-20-4Relevant articles and documents

Modular routes towards new N,O-bidentate ligands containing an electronically delocalised β-enaminone chelating backbone

Beckmann, Udo,Eichberger, Eva,Lindner, Monika,Bongartz, Melanie,Kunz, Peter C.

experimental part, p. 4139 - 4147 (2009/04/11)

Polyketones are synthesised by a transition-metal-catalysed copolymerisation of olefins and carbon monoxide. Nickel complexes with N,O-chelating ligands turned out to be promising catalysts in that field. In this work a series of new N,O ligands with an electronically delocalised β-enaminone backbone were synthesised and fully characterised. The ligand design was inspired by the ligand found in the most efficient nickel catalyst for polyketone synthesis and developed to a highly modular LEGO-like arsenal of reactions to versatile substituted β-enaminone ligands. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.

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