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213819-66-0

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213819-66-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 213819-66-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,8,1 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 213819-66:
(8*2)+(7*1)+(6*3)+(5*8)+(4*1)+(3*9)+(2*6)+(1*6)=130
130 % 10 = 0
So 213819-66-0 is a valid CAS Registry Number.

213819-66-0Relevant articles and documents

Novel (E)- and (Z)-2-styrylchromones from (E,E)-2′-hydroxycinnamylideneacetophenones - Xanthones from daylight photooxidative cyclization of (E)-2-styrylchromones

Silva, Artur M. S.,Pinto, Diana C. G. A.,Tavares, Hilario R.,Cavaleiro, Jose A. S.,Jimeno, M. Luisa,Elguero, Jose

, p. 2031 - 2038 (2007/10/03)

The oxidative cyclization of (E,E)-2′-hydroxycinnamylideneacetophenones 1a-e, and (E,E)-2′-benzyloxy-6′-hydroxycinnamylideneacetophenones 1i-1 with DMSO/ iodine, gave (E)-2-styrylchromones 3a-e,i-1. However, in the case of (E,E)-γ-alkyl-2′-hydroxycinnamyl

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