167281-89-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 167281-89-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,2,8 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 167281-89:
(8*1)+(7*6)+(6*7)+(5*2)+(4*8)+(3*1)+(2*8)+(1*9)=162
162 % 10 = 2
So 167281-89-2 is a valid CAS Registry Number.
167281-89-2Relevant articles and documents
NEW TYPE OF CONDENSATION OF 5-PYRAZOLONES UNSUBSTITUTED AT THE NITROGEN
Grandberg, I. I.,Nam, N. L.
, p. 540 - 543 (1994)
1,5-Tripyrazolylenes were prepared with satisfactory yields by the reaction of 5-pyrazolones unsubstituted at the nitrogen atom with an equimolar amount of POCl3 in open vessels together with 5-chloro derivatives (Michaelis reaction).
