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21452-81-3

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21452-81-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21452-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,5 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21452-81:
(7*2)+(6*1)+(5*4)+(4*5)+(3*2)+(2*8)+(1*1)=83
83 % 10 = 3
So 21452-81-3 is a valid CAS Registry Number.

21452-81-3Downstream Products

21452-81-3Relevant articles and documents

Silver and bronsted acid catalyzed nazaroy -type cyclizations to generate benzofulvenes

Cordier, Pierre,Aubert, Corinne,Malacria, Max,Lacote, Emmanuel,Gandon, Vincent

scheme or table, p. 8757 - 8760 (2010/02/27)

Easy as pie: Expedient access to arylsubstituted benzofulvenes is described. a-Hydroxyallenes 1 that bear two aryl groups at C1 (red circle) are directly transformed into these products at room temperature by using silver triflate as a catalyst or Bronste

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