402571-29-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 402571-29-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,2,5,7 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 402571-29:
(8*4)+(7*0)+(6*2)+(5*5)+(4*7)+(3*1)+(2*2)+(1*9)=113
113 % 10 = 3
So 402571-29-3 is a valid CAS Registry Number.
402571-29-3Relevant academic research and scientific papers
Total synthesis of siphonarin B and dihydrosiphonarin B.
Paterson, Ian,Chen, David Yu-Kai,Franklin, Alison S
, p. 391 - 394 (2007/10/03)
The spirocyclic core of the siphonarins was constructed by a directed cyclization of a linear triketone, prepared using a Sn(II)-mediated aldol coupling and Swern oxidation at C9 and C13. To circumvent a facile retro-Claisen pathway generating a baconipyr
