220542-88-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220542-88-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,5,4 and 2 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 220542-88:
(8*2)+(7*2)+(6*0)+(5*5)+(4*4)+(3*2)+(2*8)+(1*8)=101
101 % 10 = 1
So 220542-88-1 is a valid CAS Registry Number.
220542-88-1Relevant articles and documents
Polyfuryl(aryl)alkanes and their derivatives. 17. Synthesis of compounds of the oxazulene series
Butin,Gutnov,Abaev,Krapivin
, p. 762 - 770 (2007/10/03)
Preparative methods were developed for the synthesis of various compounds of the benzofurooxazulene series. It was established that the formation of an oxazulenium salt and a dihydrooxazulene derivative during the treatment of 3-(5-methyl-2-furyl)-2-(3-ox