197707-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197707-20-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,7,0 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 197707-20:
(8*1)+(7*9)+(6*7)+(5*7)+(4*0)+(3*7)+(2*2)+(1*0)=173
173 % 10 = 3
So 197707-20-3 is a valid CAS Registry Number.
197707-20-3Relevant articles and documents
Total synthesis of (+)-desoxoprosopinine via the intramolecular reaction of γ-aminoallylstannane
Kadota, Isao,Kawada, Miho,Muramatsu, Yoko,Yamamoto, Yoshinori
, p. 7469 - 7470 (2007/10/03)
A stereoselective total synthesis of (+)-desoxoprosopinine starting from L-glutamic acid as a chiral source was accomplished in which the intramolecular reaction of γ-aminoallylstannane with aldehyde was used as a key step.
