803738-92-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 803738-92-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,3,7,3 and 8 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 803738-92:
(8*8)+(7*0)+(6*3)+(5*7)+(4*3)+(3*8)+(2*9)+(1*2)=173
173 % 10 = 3
So 803738-92-3 is a valid CAS Registry Number.
803738-92-3Relevant academic research and scientific papers
Azirine/oxindole ring enlargement via amidinium intermediates
Mekhael, Maged K. G.,Bienz, Stefan,Linden, Anthony,Heimgartner, Heinz
, p. 2385 - 2404 (2007/10/03)
A novel general method for the synthesis of oxindoles, namely the 'azirine/oxindole ring enlargement via amidinium-intermediates' has been established: the reaction of 2H-azirin-3-amines 1 with BF3· OEt2 in THF solution at -78° leads
