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1217553-58-6

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1217553-58-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1217553-58-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,7,5,5 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1217553-58:
(9*1)+(8*2)+(7*1)+(6*7)+(5*5)+(4*5)+(3*3)+(2*5)+(1*8)=146
146 % 10 = 6
So 1217553-58-6 is a valid CAS Registry Number.

1217553-58-6Relevant articles and documents

Synthesis of stair-stepped polymers containing dibenz[a, h]anthracene subunits

Chan, Julian M. W.,Kooi, Steven E.,Swager, Timothy M.

, p. 2789 - 2793 (2010)

Polycyclic aromatic monomers based on substituted dibenz[a,h]anthracene frameworks have been prepared in high yields. From these, several fluorescent stair-stepped conjugated polymers containing fused aromatic subunits have been synthesized via Sonogashira polycondensations and Glaser-type oxidative couplings. The new polymers were characterized by NMR spectroscopy, gel-permeation chromatography (GPC), UV-vis, and fluorescence spectroscopy.

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