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209183-01-7

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209183-01-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209183-01-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,1,8 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 209183-01:
(8*2)+(7*0)+(6*9)+(5*1)+(4*8)+(3*3)+(2*0)+(1*1)=117
117 % 10 = 7
So 209183-01-7 is a valid CAS Registry Number.

209183-01-7Relevant articles and documents

Metal-Templated Macrolactamization of Triamino and Tetramino Esters. Facile Synthesis of Macrocyclic Spermidine and Spermine Alkaloids, (S)-(+)-Dihydroperiphylline, (±)-Buchnerine, (±)-Verbacine, (±)-Verbaskine, and (±)-Verbascenine

Kuroki, Yoshichika,Ishihara, Kazuaki,Hanaki, Naoyuki,Ohara, Suguru,Yamamoto, Hisashi

, p. 1221 - 1230 (2007/10/03)

The total synthesis of spermidine and spermine alkaloids. (S)-(+)-dihydroperiphylline (1), (±)-buchnerine (2), (±)-verbacine (3), (±)-verbaskine (4), and (±)-verbascenine (5), is described. The construction of macrocyclic lactams has been efficiently accomplished by the metal-templated cyclization of triamino esters and tetraamino esters. It was also found that the antimony(III) ethoxide is useful as an intermolecular amidation catalyst.

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