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1373885-52-9

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1373885-52-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1373885-52-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,3,8,8 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1373885-52:
(9*1)+(8*3)+(7*7)+(6*3)+(5*8)+(4*8)+(3*5)+(2*5)+(1*2)=199
199 % 10 = 9
So 1373885-52-9 is a valid CAS Registry Number.

1373885-52-9Relevant academic research and scientific papers

Synthesis of the C38-C54 spiroketal segment of halichondrin B

Yadav,Nagendra Reddy,Sabitha

scheme or table, p. 2504 - 2507 (2012/06/18)

Stereoselective synthesis of the C38-C54 segment of a marine metabolite halichondrin B comprising KLM and N rings with a C44 spiroketal including 10 chiral centers is described. The salient features of the synthesis are Carreira's addition, Sharpless asymmetric dihydroxylation and double alkylation of TosMIC strategy and double vinyl coupling reactions.

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