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81356-91-4

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81356-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81356-91-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,5 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81356-91:
(7*8)+(6*1)+(5*3)+(4*5)+(3*6)+(2*9)+(1*1)=134
134 % 10 = 4
So 81356-91-4 is a valid CAS Registry Number.

81356-91-4Downstream Products

81356-91-4Relevant articles and documents

Multi Electron Ligands, XI. Synthesis of Macrocyclic Transition Metal Ligands Containing As- and S-Donor Centres and a Functionalized Side Chain

Kauffmann, Thomas,Ennen, Johann

, p. 2714 - 2721 (2007/10/02)

Preparatory to the synthesis of catalysts, methods have been developed for the synthesis of macrocyclic ligands for transition metals which contain besides four endocyclic donor groups (-As(Ph)-, -S-) a variable side chain with a terminal halogen function

MAKROCYCLISCHE, LUFTBESTAENDIGE ACHT- UND SECHSELEKTRONENLIGANDEN FUER UEBERGANGSMETALLE

Kauffmann, Thomas,Ennen, Johann

, p. 5035 - 5038 (2007/10/02)

The synthesis of five eight-electron-ligands,two six-electronligands and one four-electron-ligand for transition metals is described.These heterocycles contain in each case arsenic and sulfur as heteroatoms, and additionally oxygen in one case.

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