138215-28-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138215-28-8 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 8 respectively.
Calculate Digit Verification of CAS Registry Number 138215-28:
(8*1)+(7*3)+(6*8)+(5*2)+(4*1)+(3*5)+(2*2)+(1*8)=118
118 % 10 = 8
So 138215-28-8 is a valid CAS Registry Number.
138215-28-8Relevant articles and documents
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;
