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213268-21-4

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213268-21-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 213268-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,2,6 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 213268-21:
(8*2)+(7*1)+(6*3)+(5*2)+(4*6)+(3*8)+(2*2)+(1*1)=104
104 % 10 = 4
So 213268-21-4 is a valid CAS Registry Number.

213268-21-4Relevant articles and documents

Synthesis of two natural betulinic acid saponins containing α-l-rhamnopyranosyl-(1→2)-α-l-arabinopyranose and their analogues

Gauthier, Charles,Legault, Jean,Lavoie, Serge,Rondeau, Simon,Tremblay, Samuel,Pichette, André

, p. 7386 - 7399 (2008/12/20)

A concise synthesis of naturally occurring betulinic acid saponins bearing an α-l-rhamnopyranosyl-(1→2)-α-l-arabinopyranoside moiety at the C-3 position is described. Betulinic acid 3β-O-α-l-rhamnopyranosyl-(1→2)-[β-d-glucopyranosyl- (1→4)]-α-l-arabinopyr

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