Also known as: BW301U; 2,4-diamino-6-(3,4-dichlorophenoxy)quinazoline
Piritrexim is a lipophilic antifolate that inhibits dihydrofolate reductase (DHFR) and was investigated for the treatment of Pneumocystis jirovecii pneumonia (PCP) and toxoplasmosis in immunocompromised patients. Mediocon Inc manufactures this API at its GMP-certified facility in Aurangabad, Maharashtra, India.
| Parameter | Specification |
|---|---|
| CAS Number | 3562-39-8 |
| Molecular Formula | C7H4N4O2 |
| Molecular Weight | 176.13 g/mol |
| Grade | IP / BP / USP |
| Category | Dihydrofolate Reductase Inhibitor / Antiprotozoal |
| Appearance | Yellow to orange crystalline powder |
| Solubility | Freely soluble in water, soluble in methanol, slightly soluble in ethanol |
| Assay | NLT 98.0% |
| Loss on Drying | NMT 0.5% |
| Heavy Metals | NMT 20 ppm |
| Residue on Ignition | NMT 0.1% |
| Microbial Limits | Complies with pharmacopoeia |
| Identification | IR, HPLC Compliant |
| Batch No | PIR/24032026 |
| Mfg Date | MAR 2026 |
| Exp Date | FEB 2031 |
| Packing | 25 kg HDPE drums / as per requirement |