138215-23-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138215-23-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,2,1 and 5 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138215-23:
(8*1)+(7*3)+(6*8)+(5*2)+(4*1)+(3*5)+(2*2)+(1*3)=113
113 % 10 = 3
So 138215-23-3 is a valid CAS Registry Number.
138215-23-3Relevant academic research and scientific papers
The Stereoselective Synthesis of 3-Fluoro-azetidinones
Araki, Koichi,Wichtowski, John A.,Welch, John T.
, p. 5461 - 5464 (2007/10/02)
3-Fluoro-azetidinones were prepared by both the enolate-imine and ketene-imine condensation reactions.The reactions of fluorinated ketenes with imines were remarkably stereoselective forming products derived from lk reaction topicity.Key Words: β-Lactams;
