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193953-76-3

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193953-76-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 193953-76-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,3,9,5 and 3 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 193953-76:
(8*1)+(7*9)+(6*3)+(5*9)+(4*5)+(3*3)+(2*7)+(1*6)=183
183 % 10 = 3
So 193953-76-3 is a valid CAS Registry Number.

193953-76-3Downstream Products

193953-76-3Relevant articles and documents

Total synthesis of (-)-(6S,7S,8S,9R,10S,2'S)-membrenone-A and (-)-(6S,7S,8S,9R,10S)- membrenone-B and structural assignment of membrenone-C.

Sampson, Rebecca A,Perkins, Michael V

, p. 1655 - 1658 (2007/10/03)

[reaction: see text] (-)-(6S,7S,8S,9R,10S,2'S)-Membrenone-A and (-)-(6S,7S,8S,9R,10S)-membrenone-B were prepared in 11 steps (3% and 2.4% overall yield, respectively). Key steps included a tin(II)-mediated aldol followed by a syn selective reduction, givi

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