117155-74-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117155-74-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,1,5 and 5 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 117155-74:
(8*1)+(7*1)+(6*7)+(5*1)+(4*5)+(3*5)+(2*7)+(1*4)=115
115 % 10 = 5
So 117155-74-5 is a valid CAS Registry Number.
117155-74-5Relevant articles and documents
IMPROVED SYNTHESIS OF THE LUKES-SORM DILACTAM. NUCLEOPHILIC OPENING TO 5-SUBSTITUTED 2-PYRROLIDINE-2-ONES
Alonso, Ricardo,Gessner, Wieslaw,Takahashi, Kimio,Brossi, Arnold
, p. 37 - 44 (2007/10/02)
An improved synthesis of the Lukes-Sorm dilactam 3 and conversion into several 5-substituted pyrrolidine-2-ones are described.