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870093-45-1

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870093-45-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 870093-45-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,0,0,9 and 3 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 870093-45:
(8*8)+(7*7)+(6*0)+(5*0)+(4*9)+(3*3)+(2*4)+(1*5)=171
171 % 10 = 1
So 870093-45-1 is a valid CAS Registry Number.

870093-45-1Relevant articles and documents

Total synthesis of bengamide E and analogues by modification at C-2 and at terminal olefinic positions

Sarabia, Francisco,Sanchez-Ruiz, Antonio

, p. 9514 - 9520 (2007/10/03)

The total synthesis of the natural product Bengamide E, one of the members of a new class of antitumor natural products of marine origin, is reported based on a convergent and flexible synthetic route featuring an oxirane ring-opening reaction and an olefin cross metathesis. In a similar way, analogues structurally modified at C-2 and at the terminal vinyl positions were prepared by introduction of various nucleophiles and alkyl substituents during the epoxide opening and the olefin cross metathesis steps, respectively. These studies demonstrate the validity of our synthetic strategy, although they reveal some problems associated with the olefin cross metathesis, whose efficiency depends on the substituent at the C-2 position as well as the steric environment of the alkene.

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