220384-91-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220384-91-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,3,8 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 220384-91:
(8*2)+(7*2)+(6*0)+(5*3)+(4*8)+(3*4)+(2*9)+(1*1)=108
108 % 10 = 8
So 220384-91-8 is a valid CAS Registry Number.
220384-91-8Relevant academic research and scientific papers
First total synthesis of (-)-8-epi-9-deoxygoniopypyrone
Surivet, Jean-Philippe,Vatele, Jean-Michel
, p. 9681 - 9682 (2007/10/03)
The structure and absolute configuration of natural 8-epi-9- deoxygoniopypyrone have been confirmed by an efficient and highly diastereoselective synthesis in 15 steps from (S)mandelic acid with an overall yield of 43%.
