CVP
C14H18N4O3
Characters: White or the kind of white crystalline powder, does not have smelly, taste pain
Distinction: Present the response
It should have the biggest absorption in 287± 2nm. Its absorption is 0.49 approximately. This infrared light absorption atlas should be consistent
With the comparison atlas (spectrum collection 103 chart).
Conform
Burning residual
(Content determination)
(According to dry computation): Contains C14H18N4O3 shouldn't be short in 99.0%.
Trimethoprim is a lipophilic and weak alkaline pyrimethamine class bacteriostatic agent. It is a white or almost white crystalline powder, odorless, bitter, and slightly soluble in chloroform, ethanol or and acetone, but almost insoluble in water and highly soluble in glacial acetic acid solution.