138202-91-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138202-91-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,2,0 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138202-91:
(8*1)+(7*3)+(6*8)+(5*2)+(4*0)+(3*2)+(2*9)+(1*1)=112
112 % 10 = 2
So 138202-91-2 is a valid CAS Registry Number.
138202-91-2Relevant 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;
