83395-25-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83395-25-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,3,9 and 5 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 83395-25:
(7*8)+(6*3)+(5*3)+(4*9)+(3*5)+(2*2)+(1*5)=149
149 % 10 = 9
So 83395-25-9 is a valid CAS Registry Number.
InChI:InChI=1/C12H13N5O4/c1-20-11(18)15-10-13-8(16-5-3-2-4-6-16)7-9-14-12(19)21-17(9)10/h2-3,7H,4-6H2,1H3,(H,13,15,18)
83395-25-9Relevant articles and documents
61. Synthesis of 2-Oxo-2H-oxadiazolo-pyrimidine-5-carbamates
Hengartner, Urs,Muller, Jean-Claude,Ramuz, Henri
, p. 669 - 672 (2007/10/02)
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.