133709-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133709-20-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,7,0 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 133709-20:
(8*1)+(7*3)+(6*3)+(5*7)+(4*0)+(3*9)+(2*2)+(1*0)=113
113 % 10 = 3
So 133709-20-3 is a valid CAS Registry Number.
133709-20-3Relevant academic research and scientific papers
A New Oxindole Synthesis
Fleming, Ian,Moses, Roger C.,Tercel, Moana,Ziv, Joseph
, p. 617 - 626 (2007/10/02)
A quaternary carbon atom can be set up by irradiation of the N-methylaniline enamine 5 of adamantane-2-carbaldehyde giving the indoline 6 in poor yield.This product was converted into the spiro-oxindole 8, but only in very low yield.Quaternary carbon atom
