40011-05-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40011-05-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,0,1 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 40011-05:
(7*4)+(6*0)+(5*0)+(4*1)+(3*1)+(2*0)+(1*5)=40
40 % 10 = 0
So 40011-05-0 is a valid CAS Registry Number.
40011-05-0Relevant academic research and scientific papers
A Simple, Versatile Preparation of Highly Substituted 2,5-Dihydro-oxoles
Bridges, Alexander J.,Thomas, Ralph D.
, p. 694 - 695 (2007/10/02)
3,3-Dialkyl-1-lithio-1-(phenylthio)allenes (1) add efficiently to ketones only on warming to -20 deg C or above; the adducts are readily cyclised by acid, or several other electrophiles, to produce highly substituted 2,5-dihydro-oxoles.
