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1158844-82-6

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1158844-82-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1158844-82-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,5,8,8,4 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1158844-82:
(9*1)+(8*1)+(7*5)+(6*8)+(5*8)+(4*4)+(3*4)+(2*8)+(1*2)=186
186 % 10 = 6
So 1158844-82-6 is a valid CAS Registry Number.

1158844-82-6Relevant articles and documents

Photochemical Degradation of Various Bridge-Substituted Fluorene-Based Materials

Kobin, Bj?rn,Behren, Sandra,Braun-Cula, Beatrice,Hecht, Stefan

, p. 5474 - 5480 (2016/07/30)

Photochemical degradation is an important issue to be overcome in advancing the lifetime of fluorene-containing conjugated polymers. In order to optimize the inertness of the materials, a quantitative measure for the efficiency of degradation is needed. Here, we introduce a method to measure a relative quantum yield of the photochemical degradation by monitoring the kinetics of the process by means of UV/vis spectroscopy and liquid chromatography (LC) techniques. This method is employed to a set of differently substituted 2,7-diphenylfluorenes, serving as model compounds for polyfluorene materials. Our measurements show that the quantum yield changes by orders of magnitude upon varying the bridge substituents and that altered kinetics indicate changing degradation mechanisms.

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