PR1MA™ Trimethoprim

PR1MA™  Trimethoprim

CAS Number: 738-70-5
Molecular Weight: 290.3
Chemical Formula: C₁₄H₁₈N₄O₃
Solubility: DMSO 50mg/ml, Methanol 12:1 mg/ml, Water 0.4 mg/ml
Storage Temperature: 2-8°C

Inhibits dihydrofolate reductase. Active against most gram negative and gram positive aerobic bacteria.


Research or further manufacturing use only, not for food or drug use.

• Appearance: Off White to Light Yellow Crystalline Powder
• Assay (Anhydrous): 98.5 - 101 %
• Heavy Metals : ≤ 20 ppm
• Loss on Drying: ≤ 1.0 %
• Melting Point: 199 - 203 ^oC
• Related Substances: ≤ 0.2 %
• Sulfated Ash: ≤ 0.1 %