208761-40-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 208761-40-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,7,6 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 208761-40:
(8*2)+(7*0)+(6*8)+(5*7)+(4*6)+(3*1)+(2*4)+(1*0)=134
134 % 10 = 4
So 208761-40-4 is a valid CAS Registry Number.
208761-40-4Relevant academic research and scientific papers
The total synthesis of spirotryprostatin A
Edmondson, Scott D.,Danishefsky, Samuel J.
, p. 1138 - 1140 (2007/10/03)
Eight concise steps suffice for the first total synthesis of the title compound 1, which inhibits the transitions from the G2 and M phases into the next phases of the cell cycle. Key steps in the synthesis are a stereocontrolled oxidative rearrangement of
