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74255-19-9

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74255-19-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74255-19-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,2,5 and 5 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 74255-19:
(7*7)+(6*4)+(5*2)+(4*5)+(3*5)+(2*1)+(1*9)=129
129 % 10 = 9
So 74255-19-9 is a valid CAS Registry Number.

74255-19-9Relevant articles and documents

A photochromic system based on photochemical or thermal chelate exchange on Ru(phen)2L2+ (L = diimine or dinitrile ligand)

Baranoff,Collin,Furusho,Laemmel,Sauvage

, p. 1935 - 1936 (2007/10/03)

In the presence of a bidentate chelate containing two convergent nitrile groups, Ru(phen)2L2+ (L = sterically hindering aromatic diimine ligand; phen = 1,10-phenanthroline) undergoes a photochemical reaction leading to quantitative replacement of the diimine by the bis-nitrile ligand; the reverse reaction takes place upon heating, also quantitatively.

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