58643-74-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 58643-74-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,8,6,4 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 58643-74:
(7*5)+(6*8)+(5*6)+(4*4)+(3*3)+(2*7)+(1*4)=156
156 % 10 = 6
So 58643-74-6 is a valid CAS Registry Number.
58643-74-6Relevant academic research and scientific papers
An Efficient Synthesis of Large Ring Acetylenes
Boivin, Jean,Huppe, Sylvain,Zard, Samir Z.
, p. 5737 - 5740 (2007/10/02)
The two regioisomeric β-ketoesters obtained by ring expansion of a cycloalkanone with ethyl diazoacetate and a Lewis acid give the same cycloalkyne upon exposure of the corresponding isoxazolinone to sodium nitrite / aqueous acetic acid and ferrous sulfate.
