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Pharmacopeial Impurities (EP / USP / BP)

Leflunomide EP Impurity F

Reference StandardAvailable on request

Buy Leflunomide EP Impurity F (CAS 1403564-06-6) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-021969.

Pack sizes
Leflunomide EP Impurity F chemical structure
CAS number1403564-06-6
FormulaC12H9F3N2O2
Molar mass270.21 g/mol
Physical formSolid
HS code38229090
InChIKeyWZXKBPYJTFTQAL-UHFFFAOYSA-N
IUPAC name5-methyl-N-[2-(trifluoromethyl)phenyl]-1,2-oxazole-4-carboxamide

About Leflunomide EP Impurity F

Analytical teams working on Leflunomide use Leflunomide EP Impurity F as a qualified comparison standard. For your records (Reference Standard), the material is defined by CAS 1403564-06-6, formula C12H9F3N2O2 and molar mass 270.21 g/mol. It is handled as a solid.

Where it is used

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Safe handling

Classified under GHS with signal word Warning and hazard statements H302. Read the SDS before first use.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. You receive a certificate of analysis with characterisation data with each order. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Leflunomide

See every impurity, metabolite and related compound we list for this API.

Leflunomide standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Leflunomide EP Impurity F
Product nameLeflunomide EP Impurity F
Catalogue numberZX-021969
CAS number1403564-06-6
IUPAC name5-methyl-N-[2-(trifluoromethyl)phenyl]-1,2-oxazole-4-carboxamide
Molecular formulaC12H9F3N2O2
Molar mass270.21 g/mol
Exact mass270.0616
GradeReference Standard
Physical formSolid
XLogP32.5
H-bond donors / acceptors1 / 6
Topological polar surface area55.1 Ų
HS code38229090
InChIKeyWZXKBPYJTFTQAL-UHFFFAOYSA-N
SMILESCC1=C(C=NO1)C(=O)NC2=CC=CC=C2C(F)(F)F
PubChem CID21912858
SynonymsLeflunomide - Impurity F, 5-Methyl-N-(2-(trifluoromethyl)phenyl)isoxazole-4-carboxamide, 4-Isoxazolecarboxamide, 5-methyl-N-(2-(trifluoromethyl)phenyl)-, 5-Methyl-N-[2-(trifluoromethyl)phenyl]isoxazole-4-carboxamide, Leflunomide Impurity F, Leflunomide ortho-isomer, 5-Methyl-N-[2-(trifluoromethyl)phenyl]-4-isoxazolecarboxamide, N-(trifluoromethylphenyl)-5-methylisoxazole-4-carboxamide

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H302Harmful if swallowed

Precautionary statements P264, P270, P301 + P317, P330, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Leflunomide EP Impurity F
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Leflunomide EP Impurity F

Which CAS number identifies Leflunomide EP Impurity F?
Leflunomide EP Impurity F is registered under CAS 1403564-06-6. You may also see it listed as Leflunomide - Impurity F, 5-Methyl-N-(2-(trifluoromethyl)phenyl)isoxazole-4-carboxamide, 4-Isoxazolecarboxamide, 5-methyl-N-(2-(trifluoromethyl)phenyl)-. Our catalogue number for this item is ZX-021969.
What are the formula and molar mass of Leflunomide EP Impurity F?
For Leflunomide EP Impurity F, its formula is C12H9F3N2O2 and its molar mass is 270.21 g/mol. The systematic (IUPAC) name is 5-methyl-N-[2-(trifluoromethyl)phenyl]-1,2-oxazole-4-carboxamide. InChIKey WZXKBPYJTFTQAL-UHFFFAOYSA-N lets you match it in any structure database.
How is Leflunomide EP Impurity F used in pharmaceutical QC?
Leflunomide EP Impurity F is a characterised reference material linked to Leflunomide. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Leflunomide EP Impurity F?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Leflunomide EP Impurity F?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Leflunomide EP Impurity F to my country?
Yes. Because Leflunomide EP Impurity F is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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