74172-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74172-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,7 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 74172-81:
(7*7)+(6*4)+(5*1)+(4*7)+(3*2)+(2*8)+(1*1)=129
129 % 10 = 9
So 74172-81-9 is a valid CAS Registry Number.
74172-81-9Relevant articles and documents
A Study of 1,4-Dihydro-1,2,4-benzotriazinyl Radicals
Neugebauer, Franz Alfred,Umminger, Irmgard
, p. 1205 - 1225 (2007/10/02)
The thermal cyclization of the azo compounds 2 to yield the 1,4-dihydro-1,2,4-benzotriazines 5 facilitates the synthesis of 1,4-dihydro-1,2,4-benzotriazinyl radicals (4).A series of these radicals were prepared and studied in detail (chemical properties,
