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1256266-69-9

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1256266-69-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256266-69-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,2,6 and 6 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1256266-69:
(9*1)+(8*2)+(7*5)+(6*6)+(5*2)+(4*6)+(3*6)+(2*6)+(1*9)=169
169 % 10 = 9
So 1256266-69-9 is a valid CAS Registry Number.

1256266-69-9Downstream Products

1256266-69-9Relevant articles and documents

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

Tamura, Satoru,Doke, Shunsuke,Murakami, Nobutoshi

experimental part, p. 8476 - 8480 (2010/12/19)

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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