104849-78-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104849-78-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,8,4 and 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 104849-78:
(8*1)+(7*0)+(6*4)+(5*8)+(4*4)+(3*9)+(2*7)+(1*8)=137
137 % 10 = 7
So 104849-78-7 is a valid CAS Registry Number.
104849-78-7Relevant articles and documents
Heterocycles from Nitrile Oxides. 3. 1,2,4-Oxadiazol-5(4H)-ones
Hussein, Ahmad Q.
, p. 127 - 128 (2007/10/02)
The reaction of nitrile oxides with potassium cyanate gives 3-aryl-1,2,4-oxadiazol-5(4H)-ones (5).These heterocycles are also obtained by cyclization of the corresponding O-carbethoxyamidoximes (7) with sodium ethoxide.