1174414-53-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1174414-53-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,4,4,1 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1174414-53:
(9*1)+(8*1)+(7*7)+(6*4)+(5*4)+(4*1)+(3*4)+(2*5)+(1*3)=139
139 % 10 = 9
So 1174414-53-9 is a valid CAS Registry Number.
1174414-53-9Relevant academic research and scientific papers
Total synthesis of pteridic acids A and B
Dias, Luiz C.,Salles Jr., Airton G.
supporting information; experimental part, p. 5584 - 5589 (2009/12/03)
(Chemical Equation Presented) The total synthesis of pteridic acids A and B is reported. The convergent asymmetric synthesis involved the use of a diastereoselective ethyl ketone aldol reaction followed by an efficient spiroketalization and provided pteri
