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223477-90-5

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223477-90-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223477-90-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,4,7 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 223477-90:
(8*2)+(7*2)+(6*3)+(5*4)+(4*7)+(3*7)+(2*9)+(1*0)=135
135 % 10 = 5
So 223477-90-5 is a valid CAS Registry Number.

223477-90-5Relevant articles and documents

Synthesis of bicyclic carbamates as precursors of Sedum alkaloid derivatives

Szakonyi, Zsolt,D'Hooghe, Matthias,Kanizsai, Iván,Fül?p, Ferenc,De Kimpe, Norbert

, p. 1595 - 1602 (2007/10/03)

Synthesis of a N-Boc-protected piperidin-2-yl phosphine oxide starting from piperidine in three steps, followed by olefination using a variety of α,β-unsaturated aldehydes resulted in tert-butyl 2-(2′- alkenylidene)piperidine-1-carboxylates in high yields

Total syntheses of (±)-cryptopleurine, (±)-antofine and (±)- deoxypergularinine

Lebrun, Stephane,Couture, Axel,Deniau, Eric,Grandclaudon, Pierre

, p. 2659 - 2670 (2007/10/03)

The alkaloids (±)-cryptopleurine 1, (±)-antofine 2, and (±)- deoxypergularinine 3 were synthesized by Pictet-Spengler cyclization of the 2-arylmethylpiperidine and -pyrrolidines 4, 5 and 6 obtained by sequential N- deprotection-reduction of the parent ene

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