57234-59-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57234-59-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,3 and 4 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 57234-59:
(7*5)+(6*7)+(5*2)+(4*3)+(3*4)+(2*5)+(1*9)=130
130 % 10 = 0
So 57234-59-0 is a valid CAS Registry Number.
57234-59-0Relevant academic research and scientific papers
Intramolecular Photoaddition of Ketenes to Conjugated Cycloalkenones
Becker, Dan,Birnbaum, Dov
, p. 570 - 578 (2007/10/02)
Diazo ketones linked to cycloalkenones by a hydrocarbon chain were irradiated with UV light.The photochemically generated ketene is shown to add the enone forming 1,4-diketones in moderate yield.The scope and limitation of the cycloaddition for this proce
