Leflunomide

• Catalog Number: orb1713894
• Category: Small Molecules
• Description: Immunosupressant
• CAS Number: 75706-12-6
• Form/Appearance: White crystalline solid
• Purity: > 98% (TLC: 5:95, CH3OH/CH2Cl2; Rf=0.65); NMR (Conforms)
• MW: 270.21
• SMILES: CC1=C(C=NO1)C(=O)NC2=CC=C(C=C2)C(F)(F)F
• Formula: C₁₂H₉F₃N₂O₂
• Hazard Information: Classification: Caution: Substance not yet fully tested. Safety Phrases: S22 - Do not breathe dust S24/25 - Avoid contact with skin and eyes S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection Risk Phrases: R25 – Toxic if swallowed R62 – Possible risk of impaired fertility R63 – Possible risk of harm to the unborn child Hazard Phrases: H301 – Toxic if swallowed. H315 – Causes skin irritation. H319 – Causes serious eye irritation H335 – May cause respiratory irritation Precautionary Phrases: P264 – Wash hands thoroughly after handling P280 – Wear protective gloves/protective clothing/eye protection/ face protection P301+310 - IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician P308+313 - If exposed or concerned: Get medical advice/attention
• Solubility (25°C): May be dissolved in DMSO (30 mg/ml); or Ethanol (27 mg/ml)
• Source: Synthetic
• Storage: -20°C
• Alternative names: 5-methyl-N-[4-(trifluoromethyl) phenyl]-isoxazole-
• Note: For research use only
• Expiration Date: 12 months from date of receipt.

Chemical structure of Leflunomide, a Immunosupressant. CAS #: 75706-12-6. Molecular Formula: C12H9F3N2O2. Molecular Weight: 270.21 g/mol.