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40995-85-5

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40995-85-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40995-85-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,9,9 and 5 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 40995-85:
(7*4)+(6*0)+(5*9)+(4*9)+(3*5)+(2*8)+(1*5)=145
145 % 10 = 5
So 40995-85-5 is a valid CAS Registry Number.

40995-85-5Relevant articles and documents

Synthesis of Bipyridyl-, Viologen-, and Quinone-bridged Porphyrins

Leighton, Philip,Sanders, Jeremy K. M.

, p. 2385 - 2394 (2007/10/02)

Mesoporphyrin-II has been bridged by several 2,2'-hydroxymethyl-substituted 4,4'-bipyridine compounds.N-Methylation of the bipyridine bridge groups yielded viologen-bridged porphyrins which have unusual aggregation and fluorescence properties.An improved route to quinone-bridged porphyrins is also reported.

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