One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, COA of Formula: C4H2Cl2N2O, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 932-22-9, Name is 4,5-Dichloro-3(2H)-pyridazinone, molecular formula is C4H2Cl2N2O
Substituent-dependence of photophysical properties of trans-2- styrylpyridazin-3(2H)-ones
(Figure Presented) The photophysical behavior of trans-2-styrylpyridazin- 3(2H)-ones 3 strongly depend on the number and the position of substituents in the phenyl ring in THF, methylene chloride, acetonitrile and methanol. The absorption spectra of 3 containing the electron-donating substituents at the para-position show the red-shift, whereas the spectra of 3 containing the electron-withdrawing substituents show the blueshift. For the trans-2-(p-substituted-styryl)pyridazin-3(2H)-ones 3b-3h and 3k-3o, the magnitude of the solvatochromic shifts and the shape of the fluorescence spectra depend on the number and/or the position of substituents in benzene ring. The emission maximum of trans-2-styrylpyridazin-3(2H)-ones involving the electron-donating group is larger than one of trans-2-styrylpyridazin-3(2H)-ones involving the electron-withdrawing group in the phenyl ring. The magnitude of the emission maximum is roughly parallel to the relative electron-withdrawing ability of the substituents of the phenyl ring.
One of the oldest and most widely used commercial enzyme inhibitors is aspirin, COA of Formula: C4H2Cl2N2O, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 932-22-9
Reference£º
Pyridazine – Wikipedia,
Pyridazine | C4H4N2299 – PubChem