128641-59-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128641-59-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,4 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 128641-59:
(8*1)+(7*2)+(6*8)+(5*6)+(4*4)+(3*1)+(2*5)+(1*9)=138
138 % 10 = 8
So 128641-59-8 is a valid CAS Registry Number.
128641-59-8Relevant articles and documents
STUDIES OF PYRIDAZINE COMPOUNDS, XXV. REINVESTIGATION OF ACYLATION OF PYRIDAZINYLHYDRAZONES
Szilagyi, Geza,Matyus, Peter,Sohar, Pal
, p. 7921 - 7928 (2007/10/02)
The acylation of morpholino substituted pyridazinylhydrazones afforded triazolopyridazinium salts.Structure elucidation by ir, 1H- and 13C-nmr spectroscopy, reaction mechanism and ring-chain tautomerism are discussed.
