Leflunomide

Immunosupressant

Catalog No. SIH-368

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CAS No. 75706-12-6
Molecular Formula C12H9F3N2O2
SKU: SIH-368 Categories: ,

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SIH-368_Leflunomide_Chemical_Structure.png
Product Name Leflunomide
Description

Immunosupressant

Purity >98% (TLC: 5:95, CH3OH/CH2Cl2; Rf=0.65); NMR (Conforms)
CAS No. 75706-12-6
Molecular Formula C12H9F3N2O2
Molecular Weight 270.21
Field of Use Not for use in humans. Not for use in diagnostics or therapeutics. For in vitro research use only.

Properties

Storage Temperature -20ºC
Shipping Temperature Shipped Ambient
Product Type Inhibitor
Solubility May be dissolved in DMSO (30 mg/ml); or Ethanol (27 mg/ml)
Source Synthetic
Appearance White crystalline solid
SMILES CC1=C(C=NO1)C(=O)NC2=CC=C(C=C2)C(F)(F)F
InChI InChI=1S/C12H9F3N2O2/c1-7-10(6-16-19-7)11(18)17-9-4-2-8(3-5-9)12(13,14)15/h2-6H,1H3,(H,17,18)
InChIKey VHOGYURTWQBHIL-UHFFFAOYSA-N
Safety Phrases 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
Cite This Product Leflunomide (StressMarq Biosciences Inc., Victoria BC CANADA, Catalog # SIH-368)

Biological Description

Alternative Names 5-methyl-N-[4-(trifluoromethyl) phenyl]-isoxazole-4-carboxamide
Research Areas Cell Signaling, Neuroscience
PubChem ID 3899
Scientific Background Leflunomide is an immunomodulatory agent that inhibits dihydroorotate dehydrogenase, thereby suppressing pyrimidine synthesis and T-cell proliferation. In neuroscience, leflunomide is explored for its anti-inflammatory properties, particularly in models of neuroinflammation and autoimmune neurological disorders such as multiple sclerosis. By modulating immune responses, leflunomide helps elucidate the role of peripheral and central immune mechanisms in neurodegenerative disease progression. Its application in neuroimmunology research supports the development of therapeutic strategies targeting immune-mediated neuronal damage.
References 1. Fukushima R., Kanamori S., Hirashiba M., et al. (2007) Reprod. Toxical. 24(3-4): 310-316.
2. Smolen JS., Emery P. (2000) Rheumatology. 39: 48-56.
3. Fox R.I., Herrman M.L., Franqou C.G., Wahl G.M., Morns R.E., Strand V. and Kirschbaum B.S. (1999) Clin Immunol 93(3): 198-208.

Product Images

<p>Chemical structure of Leflunomide (SIH-368), a Immunosupressant. CAS #: 75706-12-6. Molecular Formula: C12H9F3N2O2. Molecular Weight: 270.21 g/mol.</p>

Chemical structure of Leflunomide (SIH-368), a Immunosupressant. CAS #: 75706-12-6. Molecular Formula: C12H9F3N2O2. Molecular Weight: 270.21 g/mol.

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