136411-59-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136411-59-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,4,1 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 136411-59:
(8*1)+(7*3)+(6*6)+(5*4)+(4*1)+(3*1)+(2*5)+(1*9)=111
111 % 10 = 1
So 136411-59-1 is a valid CAS Registry Number.
136411-59-1Relevant articles and documents
A Novel Approach to the Pyridopyridazine Ring. Synthesis of Pyridopyridazin-5(6H)-one from 3,4-Disubstituted Pyridazines
Vors, Jean-Pierre
, p. 1043 - 1046 (2007/10/02)
The synthesis of new pyridopyridazin-5(6H)-one from ethyl 3-methyl-4-pyridazinecarboxylate using an enamination/ring closure sequence is described.The starting material is easily available from a hetero Diels-Alder reaction between a 1,2-diaza-1,3-
