Basic Information

Drug ID DDPD01097 ...
Drug Name Leflunomide
Molecular Weight 270.2073
Molecular Formula C12H9F3N2O2
CAS Number 75706-12-6
SMILES CC1=C(C=NO1)C(=O)NC1=CC=C(C=C1)C(F)(F)F
External Links
DRUGBANK DB01097
PubChem Compound 3899
PDR 509
Drugs.com Drugs.com Drug Page

Experimental Physicochemical Property

Property Name Property Value Unit Raw Value Raw Unit Reference
Log P 2.8 - 2.8 - DRUGBANK
Melting Point 165.5 165-166 DRUGBANK
Water Solubility 21.0 mg/L 21 mg/L DRUGBANK

Pharmacokinetic/ Toxicokinetic Property

Property Name Property Value Unit Raw Value Raw Unit Annotation Factor Reference
C Max 35000.0 ng/ml 35.0 ug/ml PO, oral; rheumatoid arthritis; The Pharmacological Basis of Therapeutics
T Max 9.0 h 6-12 h DRUGBANK
T Max 9.0 h 6-12 h PO, oral; rheumatoid arthritis; The Pharmacological Basis of Therapeutics
Clearance 0.000720 L/h/kg 0.012 ml/min/kg apparent clearance; normal,healthy; RD, renal impairment, Renal disease,including uremia ↑ ; The Pharmacological Basis of Therapeutics
Volume of Distribution 0.13 L/kg 0.13 L/kg DRUGBANK
Volume of Distribution 0.18 L/kg 0.18(0.09-0.44) L/kg Apparent volume of distribution; normal,healthy; RD, renal impairment, Renal disease,including uremia ↑ ; The Pharmacological Basis of Therapeutics
Half-life 336.0 h 2 week DRUGBANK
Half-life 377.0 h 377(336-432) h rheumatoid arthritis; patients; RD, renal impairment, Renal disease,including uremia → ; The Pharmacological Basis of Therapeutics
Toxicity LD50 175.0 mg/kg 100-250 mg/kg PO, oral; DRUGBANK
Eliminate Route 43.0 % ~43 % Urinary excretion; Single dose; DRUGBANK
Eliminate Route 48.0 % ~48 % Faeces excretion; Single dose; DRUGBANK
Eliminate Route 0 % ~0 % Urinary excretion; Active metabolite; Unchanged drug; The Pharmacological Basis of Therapeutics
Protein Binding 99.3 % >99.3 % DRUGBANK
Protein Binding 99.4 % 99.4 % Active metabolite; RD, renal impairment, Renal disease,including uremia ↓ ; The Pharmacological Basis of Therapeutics

Maximum Dosage

Property Name Property Value Unit Raw Value Raw Unit Annotation Brand Name Component Reference
Max dose for adults 20.0 mg/day 20 mg/day PO, oral Arava leflunomide PDR
Max dose for elderly 20.0 mg/day 20 mg/day PO, oral Arava leflunomide PDR

Drug Property Radar Chart

...

Note: Center: Q1-1.5*IQR, Edge: Q3+1.5*IQR; Q1: Quantile 1, Q3: Quantile 3, IQR: Q3-Q1