609817-40-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 609817-40-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,0,9,8,1 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 609817-40:
(8*6)+(7*0)+(6*9)+(5*8)+(4*1)+(3*7)+(2*4)+(1*0)=175
175 % 10 = 5
So 609817-40-5 is a valid CAS Registry Number.
609817-40-5Relevant articles and documents
Total synthesis of (-)-stemonine
Williams, David R.,Shamim, Khalida,Reddy, Jayachandra P.,Amato, George S.,Shaw, Stephen M.
, p. 3361 - 3364 (2007/10/03)
(Matrix Presented) An enantioselective total synthesis of (-)-stemonine (1) is reported via a convergent assembly of the acyclic precursor 2. Key transformations include a Staudinger-aza-Wittig reaction to form the central perhydroazepine ring system and