Cas 18813-80-4,2,4,6,8-tetra-tert-butyldibenzofuran

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Check Digit Verification of cas no

The CAS Registry Mumber 18813-80-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,8,1 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 18813-80:
(7*1)+(6*8)+(5*8)+(4*1)+(3*3)+(2*8)+(1*0)=124
124 % 10 = 4
So 18813-80-4 is a valid CAS Registry Number.

18813-80-4Upstream product

6390-69-8 3,3',5,5'-tetra(tert-butyl)biphenyl-2,2'-diol

18813-80-4Downstream Products

132-64-9 dibenzofuran

18813-80-4Relevant articles and documents

The solid-phase anhydroheterocyclization of 2,2′-dihydroxy-3,3′,5,5′-tetra-tert-butyibiphenyl under the action of dioxane dibromide

Belostotskaya,Vol'eva,Komissarova,Ershov

, p. 987 - 987 (1996)

Dehydration of 2,2′-dihydroxy-3,3′,5,5′-tetra-tert-butylbiphenyl under bromine action as a new way to prepare dibenzofuran derivatives

Vol'eva,Belostotskaya,Ershov

, p. 744 - 744 (2007/10/03)

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CAS

18813-80-4