120638-51-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 120638-51-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,6,3 and 8 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 120638-51:
(8*1)+(7*2)+(6*0)+(5*6)+(4*3)+(3*8)+(2*5)+(1*1)=99
99 % 10 = 9
So 120638-51-9 is a valid CAS Registry Number.
120638-51-9Relevant academic research and scientific papers
Cycloadditions of (Alkylarylamino)ketenes with Imines. cis-3-Amino-2-azetidinones
Brady, William T.,Gu, Yi Qi
, p. 2838 - 2842 (2007/10/02)
The in situ cycloaddition of (alkylarylamino)ketenes with various imines to form predominately cis-3-amino-2-azetidinones is described.A mechanism involving a dipolar intermediate is provided whereby the structure of the intermediate is determined by both
