Application of 21169-71-1, 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.21169-71-1, Name is Isoxazole-5-carboxylic acid, molecular formula is C4H3NO3. In a article，once mentioned of 21169-71-1
The compounds of the subject invention have a structure according to formula I: wherein X is S or SO2; R1 is (1C-6C)alkyl, (3C-6C)alkenyl, or (3C-6C)alkynyl, each optionally subst ituted with (3C-6C)cycloalkyl, OH, OC(O)(1C-4C)alkyl, (1C-4C)alkoxy, halogen, cyano, formyl, C(O)(1C-4C)alkyl, CO2H, CO2(1C-4C)alkyl, C(O)NR5R6, S(O)(1C-4C)alkyl or S(O)2(1C-4C)alkyl; R2 is hydrogen, (1C-4C)alkyl or C(O)(1C-4C)alkyl; R3 is a phenyl group optionally substituted with (1C-4C)alkyl, (1C-4C)fluoroalkyl, (1C-4C)alkoxy, (1C-4C)fluoroalkoxy, halogen, cyano or nitro; or R3 is a 5-or 6-membered aromatic heterocyclic ring structure optionally substituted with (1C-4C)alkyl, (1C-4C)fluoroalkyl, (1C-4C)alkoxy, halogen or cyano; R4 is a phenyl group or an aromatic 6-membered heterocycle, substituted at the ortho position with 1-hydroxy(1C-4C)alkyl, (1C-4C)alkoxy, C(O)(1C-4C)alkyl, CO2(1C-4C)alkyl, C(O)NH2, cyano, nitro, or CH=NOR 7, and optionally further substituted with (1C-2C)alkyl, (1C-2C) fluoroalkyl or halogen; R5 is 2-pyridyl optionally substituted with (1C-2C)alkyl, (1C-2C)fluoroalkyl or halogen; or R5 and R6 are independently hydrogen or (1C-4C)alkyl; R7 is hydrogen or C(O)(1C-4C)alkyl; R8 , R9 , R10 are independently hydrogen, (1C-2C)alkyl, fluoro or chloro; or a salt or hydrate form thereof.
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 21169-71-1
Reference：
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem