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131161-32-5

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131161-32-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131161-32-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,1,6 and 1 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 131161-32:
(8*1)+(7*3)+(6*1)+(5*1)+(4*6)+(3*1)+(2*3)+(1*2)=75
75 % 10 = 5
So 131161-32-5 is a valid CAS Registry Number.

131161-32-5Downstream Products

131161-32-5Relevant articles and documents

Synthesis of Strapped, Dimeric, and Trimeric Porphyrins Based on Intramolecular Macrocyclization Reactions

Osuka, Atsuhiro,Kobayashi, Fumikazu,Maruyama, Kazuhiro

, p. 1213 - 1225 (2007/10/02)

Strapped porphyrins were prepared directly by the acid-catalyzed condensation reaction of 3,3'-diethyl-4,4'-dimethyl-2,2'-dipyrrylmethane and methylenedioxy bridged dialdehydes having a strap linkage longer than 7 atoms.Dimeric and trimeric porphyrins wit

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