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120219-31-0

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120219-31-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 120219-31-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,2,1 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 120219-31:
(8*1)+(7*2)+(6*0)+(5*2)+(4*1)+(3*9)+(2*3)+(1*1)=70
70 % 10 = 0
So 120219-31-0 is a valid CAS Registry Number.

120219-31-0Relevant articles and documents

Total synthesis and biological evaluation of tamandarin B analogues

Adrio, Javier,Cuevas, Carmen,Manzanares, Ignacio,Joullie, Madeleine M.

, p. 5129 - 5138 (2007)

(Chemical Equation Presented) Tamandarins A and B are a class of marine natural cyclodepsipeptides with structures and biological activities closely related to those of the didemnins. The easier synthetic access to tamandarins accelerates the preparation of new macrocyclic derivatives of this family of antitumor, antiviral, and immunosuppressive compounds. The optimization of the previously reported synthetic route to tamandarins by changing the macrolactamization site from Nst1 and Thr6 to Pro 4 and N,O-Me2Tyr5 residues led to a significant improvement in the reaction yield. Using this new synthetic approach, four new macrocyclic analogues of tamandarin B were prepared and evaluated for anticancer activity. These results provide further insight into the structure-activity relationship of the tamandarins and didemnins.

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