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255822-25-4

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255822-25-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 255822-25-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,5,8,2 and 2 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 255822-25:
(8*2)+(7*5)+(6*5)+(5*8)+(4*2)+(3*2)+(2*2)+(1*5)=144
144 % 10 = 4
So 255822-25-4 is a valid CAS Registry Number.

255822-25-4Downstream Products

255822-25-4Relevant articles and documents

Reactivity of silyl monomers for the oxidative polymerization of phenylene units

Bouachrine, Mohammed,Lere-Porte, Jean-Pierre,Moreau, Joel J. E.

, p. 265 - 278 (1999)

Oxidative coupling of silyl monomers containing phenylene units was performed electrochemically and chemically using FeCl3 as oxidant. 2,5-Trimethylsilyl-1,4-dihexoxybenzene led to poly (2.5-dihexoxyparaphenylene) with a degree of polymerization higher than the one obtained upon oxdative coupling of non silyl monomers. The coupling reaction was however moderately improved in the case of 3,6-bis-dimethylsilyl(N-n-butylcarbazole). The role of the silyl substituents during the oxidative polymerization is dicussed.

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