83559-37-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83559-37-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,5 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 83559-37:
(7*8)+(6*3)+(5*5)+(4*5)+(3*9)+(2*3)+(1*7)=159
159 % 10 = 9
So 83559-37-9 is a valid CAS Registry Number.
83559-37-9Relevant articles and documents
Onium Salt-Catalyzed Reactions between Carbonyl Compounds and Diketene
Dehmlow, Eckehard V.,Shamout, Abdul Rahman
, p. 1753 - 1755 (2007/10/02)
4-Oxo-1,3-dioxins (plus dehydracetic acid) are obtained in high yields on refluxing the title compounds in toluene in the presence of catalytic amounts of quaternary ammonium chlorides.