Trimethoprim with GMP/COS, BP/USP/EP We can supply it with excellent quality and competitive price. IdentificationName TrimethoprimSynonyms 2,4-Diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine; 5-(3,4,5-Trimethoxybenzyl)-2,4-diaminopyrimidine; 5-((3,4,5-Trimethoxyphenyl)methyl)-2,4-pyrimidinediamine; Abaprim Molecular Structure Molecular Formula C14H18N4O3Molecular Weight 290.32CAS Registry Number ...