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50640-97-6

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50640-97-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 50640-97-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,0,6,4 and 0 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 50640-97:
(7*5)+(6*0)+(5*6)+(4*4)+(3*0)+(2*9)+(1*7)=106
106 % 10 = 6
So 50640-97-6 is a valid CAS Registry Number.

50640-97-6Relevant articles and documents

Expanding the range of "Daniphos"-type P∩P- and P∩N-ligands: Synthesis and structural characterisation of new [(η6-arene)Cr(CO)3] complexes

Alberico, Elisabetta,Braun, Wolfgang,Calmuschi-Cula, Beatrice,Englert, Ulli,Salzer, Albrecht,Totev, Daniel

, p. 4923 - 4945 (2008/09/17)

New P∩P- and P∩N-ligands have been synthesised whose core structure is an [(η6-arene)Cr(CO)3] unit. These new ligands, which extend the range of "Daniphos" ligands, are endowed with central and planar chirality and have been prepared through a stereoselective synthetic strategy from optically pure benzylamines bearing a second substituent on the arene other than the benzyldimethylamino group. Because the two faces of unsymmetrically 1,2- and 1,3-disubstituted benzylamine are diastereotopic, which means that diastereomeric complexes arise upon coordination of the Cr(CO) 3 fragment to either of these two faces, the synthetic plan has been adjusted by exploiting the trimethylsilyl group as a temporary steric modulator in order to access both complexes with high diastereoselectivity. Wiley-VCH Verlag GmbH & Co. KGaA, 2007.

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