27421-90-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 27421-90-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,4,2 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 27421-90:
(7*2)+(6*7)+(5*4)+(4*2)+(3*1)+(2*9)+(1*0)=105
105 % 10 = 5
So 27421-90-5 is a valid CAS Registry Number.
27421-90-5Relevant articles and documents
Synthesis and multinuclear NMR investigation of some mesoionic 3-phenyl-5-imino-1,2,3,4-oxatriazole imines
Ja?wiński, Jaros?aw,Staszewska-Krajewska, Olga
, p. 23 - 33 (2007/10/03)
Six new derivatives of mesoionic 3-phenyl-5-imino-1,2,3,4-oxatriazole imine have been obtained and investigated by 1H, 13C, 14N, 15N and 17O NMR techniques. The 15N and 17O NMR s
