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157758-30-0

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157758-30-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157758-30-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,5 and 8 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 157758-30:
(8*1)+(7*5)+(6*7)+(5*7)+(4*5)+(3*8)+(2*3)+(1*0)=170
170 % 10 = 0
So 157758-30-0 is a valid CAS Registry Number.

157758-30-0Relevant articles and documents

A Convergent Approach to Swinholide A. Stereoselective Construction of the C3-C17 Fragment of Swinholide A

Patron, A. P.,Richter, P. K.,Tomaszewski, M. J.,Miller, R. A.,Nicolaou, K. C.

, p. 1147 - 1150 (1994)

A strategy for a total synthesis of the cytotoxic dimeric macrolide swinholide A (1, Scheme 1) is outlined and a stereoselective construction of the suitably functionalized C3-C17 fragment 4, starting with building blocks 6, 7, 9 and 10 is described.

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