Reference of 1123-49-5, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.1123-49-5, Name is 3,5-Dimethyl-4-nitroisoxazole, molecular formula is C5H6N2O3. In a article，once mentioned of 1123-49-5
The first example of a retro-Henry type reaction is reported using 3-hydroxy-3-((3-methyl-4-nitroisoxazol-5-yl)methyl)indolin-2-ones which are prepared via catalyst-free Henry reaction of 3,5-dimethyl-4-nitroisoxazole and isatin. These compounds were used for the selective synthesis of 3-hydroxy-indolyl-2-oxindoles and bis-indolyl-2-oxindoles (symmetric/unsymmetric) via retro-Henry type reaction followed by Friedel-Crafts alkylation reactions in water (one-pot approach). 3-Hydroxy-3-((3-methyl-4-nitroisoxazol-5-yl)methyl)indolin-2-ones on hydrolysis yielded 2-(3-hydroxy-2-oxoindolin-3-yl)acetic acids, which are sources of natural products and biologically active compounds.
A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 1123-49-5
Reference：
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem