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155787-81-8

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155787-81-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155787-81-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,7,8 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 155787-81:
(8*1)+(7*5)+(6*5)+(5*7)+(4*8)+(3*7)+(2*8)+(1*1)=178
178 % 10 = 8
So 155787-81-8 is a valid CAS Registry Number.

155787-81-8Relevant articles and documents

A Quick-and-Easy Route to Unsymmetrically Substituted Derivatives of Triphenylene: Preparation of Polymeric Discotic Liquid Crystals

Boden, Neville,Bushby, Richard J.,Cammidge, Andrew N.

, p. 465 - 466 (2007/10/02)

Unsymmetrically substituted triphenylenes can be obtained by the iron(III) chloride mediated oxidative coupling of a 3,3',4,4'-tetraalkoxybiphenyl with a 1,2-dialkoxybenzene thus opening up a practicable route to polymeric discotic liquid crystals.

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