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108869-78-9

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108869-78-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 108869-78-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,8,6 and 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 108869-78:
(8*1)+(7*0)+(6*8)+(5*8)+(4*6)+(3*9)+(2*7)+(1*8)=169
169 % 10 = 9
So 108869-78-9 is a valid CAS Registry Number.

108869-78-9Relevant articles and documents

Synthesis of 5,15-Diaryl-Substituted Porphyrins by Aminomethylation of Bis(4-ethyl-3-methyl-2-pyrryl)phenylmethanes

Hombrecher, Hermann K.,Horter, Gaby

, p. 219 - 227 (2007/10/02)

The synthesis of unsymmetrically diarylsubstituted porphyrins 11a-g (yields 5-19 percent) is described.Aminomethylation of dipyrromethane 6a with Mannich reagent 9 in acetonitrile leads to the intermediate 10, which is directly converted into the porphyri

Synthese von 1,3- und 1,4-phenylenverknuepften bischinonsubstituierten Porphyrin-Dimeren

Sessler, Jonathan L.,Johnson, Martin R.

, p. 679 - 680 (2007/10/02)

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