721-49-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721-49-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,2 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 721-49:
(5*7)+(4*2)+(3*1)+(2*4)+(1*9)=63
63 % 10 = 3
So 721-49-3 is a valid CAS Registry Number.
721-49-3Relevant academic research and scientific papers
PhCOCI-Py/basic alumina as a versatile reagent for benzoylation in solvent-free conditions
Paul, Satya,Nanda, Puja,Gupta, Rajive
, p. 374 - 380 (2007/10/03)
A solvent-free procedure using PhCOCl-Py/basic alumina under microwave irradiation has been developed for N-, O- and S-benzoylation.
