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Trimethoprim
C14H18N4O3 290.32
 2,4-Pyrimidinediamine, 5-[(3,4,5-trimethoxyphenyl)methyl]-.
 2,4-Diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine [738-70-5]

» Trimethoprim contains not less than 98.5 percent and not more than 101.0 percent of C14H18N4O3, calculated on the dried basis.

USP REFERENCE STANDARDS FOR PURCHASE

USP Trimethoprim RS
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