71998-98-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71998-98-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,9,9 and 8 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 71998-98:
(7*7)+(6*1)+(5*9)+(4*9)+(3*8)+(2*9)+(1*8)=186
186 % 10 = 6
So 71998-98-6 is a valid CAS Registry Number.
71998-98-6Relevant articles and documents
Reaction of 3-aminopyrazolines with nitrous acid. Stable nonaromatic diazonium salts.
Gorelik, M. V.,Titova, S. P.,Rybinov, V. I.
, p. 1143 - 1148 (2007/10/02)
During the action of a constant excess of nitrous acid on 1-phenyl-3-amino-Δ2-pyrazoline the initially formed cation-radical does not undergo dimerization but changes into a 1-phenyl-3-pyrazolediazonium salt.In the case of 1-(p-tolyl)-3-amino-Δ
