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853569-27-4

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853569-27-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 853569-27-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,3,5,6 and 9 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 853569-27:
(8*8)+(7*5)+(6*3)+(5*5)+(4*6)+(3*9)+(2*2)+(1*7)=204
204 % 10 = 4
So 853569-27-4 is a valid CAS Registry Number.

853569-27-4Upstream product

853569-27-4Relevant academic research and scientific papers

Total synthesis of peumusolide A, NES non-antagonistic inhibitor for nuclear export of MEK

Tamura, Satoru,Doke, Shunsuke,Murakami, Nobutoshi

, p. 8476 - 8480 (2010)

The first total synthesis of peumusolide A (1) has been achieved by combination of regio- and stereo-selective aluminum-mediated hydroiodination to 2-yn-1-ol and enantioselective reduction of 4-en-1-yn-3-one with the chiral oxazaborolidine as the key reactions. This total synthesis has unequivocally established our proposed absolute structure of 1.

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