124558-54-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 124558-54-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,5,5 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 124558-54:
(8*1)+(7*2)+(6*4)+(5*5)+(4*5)+(3*8)+(2*5)+(1*4)=129
129 % 10 = 9
So 124558-54-9 is a valid CAS Registry Number.
124558-54-9Relevant academic research and scientific papers
A Convenient and Regioselective Synthesis of 4,6-Diaryl-2,3,4,7-tetrahydrooxepin-2-ones and 1,4-Diphenyl-2,3,4,7-tetrahydro-1H-azepin-2-one
Ishida, Masaru,Muramaru, Hajime,Kato, Shinzi
, p. 562 - 564 (2007/10/02)
Reactions of 2-vinyloxiranes and 2-vinylaziridine with dichloroketene gave the corresponding 2,3,4,7-tetrahydrooxepin-2-ones and 2,3,4,7-tetrahydroazepin-2-one derivatives, respectively.
