83395-28-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83395-28-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,3,9 and 5 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 83395-28:
(7*8)+(6*3)+(5*3)+(4*9)+(3*5)+(2*2)+(1*8)=152
152 % 10 = 2
So 83395-28-2 is a valid CAS Registry Number.
InChI:InChI=1/C15H19N5O4/c1-2-3-9-23-14(21)18-13-16-11(19-7-5-4-6-8-19)10-12-17-15(22)24-20(12)13/h4-5,10H,2-3,6-9H2,1H3,(H,16,18,21)
83395-28-2Relevant articles and documents
61. Synthesis of 2-Oxo-2H-oxadiazolo-pyrimidine-5-carbamates
Hengartner, Urs,Muller, Jean-Claude,Ramuz, Henri
, p. 669 - 672 (1983)
Thermal cyclization of the pyrimidine-N-oxide dicarbamate 2 gives a 95:5 mixture of the 2-oxo-2H-oxadiazolo- and pyrimidinecarbamates 3 and 4.An efficient procedure for the conversion of 3 to 4, and vice versa, is described.