Pyrimethamine
- CAS NO. : 58-14-0
- CAT NO. : PH-API-8140
Physical State: Solid (white to off-white crystalline powder)
Melting Point: 233–234 °C (decomposes)
Boiling Point: ≈ 393 °C (rough estimate)
Density: ≈ 1.217 g/cm³ (estimated)
Solubility:
Water: < 0.01 g/100 mL at ~21 °C (very sparingly soluble)
Methanol/CH₂Cl₂ (3:1) mixture: dissolves 0.25 g per 10 mL (clear)
pKa: ≈ 7.0 (at 20 °C; uncertain)
Storage Conditions: Keep in a dark place, in inert atmosphere, at room temperature
Molecular Formula: C₁₂H₁₃ClN₄
Molecular Weight: 248.71 g/mol
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