99333-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99333-77-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,3,3 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 99333-77:
(7*9)+(6*9)+(5*3)+(4*3)+(3*3)+(2*7)+(1*7)=174
174 % 10 = 4
So 99333-77-4 is a valid CAS Registry Number.
99333-77-4Relevant academic research and scientific papers
The asymmetric synthesis of β-lactam antibiotics. II. The first enantioselective synthesis of the carbacephalosporin nucleus
Evans,Sjogren
, p. 3787 - 3790 (2007/10/02)
The application of asymmetric ketene-imine cycloadditions to the first enantioselective synthesis of the carbacephalosporin nucleus is described.
