Shipping to 128 countriesCOA and SDS with every lotQuotes within one business day
contact@zemixal.com
Bulk CASAccount
Pharmacopeial Impurities (EP / USP / BP)

Leflunomide EP Impurity E

Reference StandardAvailable on request

Order Leflunomide EP Impurity E (CAS 208401-20-1) online at Zemixal: C12H9F3N2O2, COA and SDS with every lot, worldwide shipping.

Pack sizes
Leflunomide EP Impurity E chemical structure
CAS number208401-20-1
FormulaC12H9F3N2O2
Molar mass270.21 g/mol
Physical formSolid
HS code38229090
InChIKeySNUBGILHVSSQAY-UHFFFAOYSA-N
IUPAC name3-methyl-N-[4-(trifluoromethyl)phenyl]-1,2-oxazole-4-carboxamide

About Leflunomide EP Impurity E

Zemixal lists Leflunomide EP Impurity E for laboratories that identify, quantify or control Leflunomide and its related substances. Key data (Reference Standard): CAS 208401-20-1, formula C12H9F3N2O2 and molar mass 270.21 g/mol. It is handled as a solid.

Typical applications

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

Handling and storage

Hazard communication follows GHS (Warning: H302). Our SDS lists exposure controls and first-aid measures.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Each lot travels with a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

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 E
Product nameLeflunomide EP Impurity E
Catalogue numberZX-021966
CAS number208401-20-1
IUPAC name3-methyl-N-[4-(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
InChIKeySNUBGILHVSSQAY-UHFFFAOYSA-N
SMILESCC1=NOC=C1C(=O)NC2=CC=C(C=C2)C(F)(F)F
PubChem CID9860220
SynonymsLeflunomide - Impurity E, 3-Methyl-N-(4-(trifluoromethyl)phenyl)isoxazole-4-carboxamide, 4-Isoxazolecarboxamide, 3-methyl-N-(4-(trifluoromethyl)phenyl)-, 3-Methyl-N-[4-(trifluoromethyl)phenyl]isoxazole-4-carboxamide, Leflunomide impurity E, 5-Desmethyl-3-methyl Leflunomide, 3-methyl-4-[4- (trifluoromethyl)-phenylaminocarbonyl]isoxazole, 3-methyl-4-[4-(trifluoromethyl)-phenylaminocarbonyl]isoxazole, 3-methyl-4-[4-(trifluoromethyl)phenylaminocarbonyl]isoxazole

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 E
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 E

Which CAS number identifies Leflunomide EP Impurity E?
Leflunomide EP Impurity E is registered under CAS 208401-20-1. You may also see it listed as Leflunomide - Impurity E, 3-Methyl-N-(4-(trifluoromethyl)phenyl)isoxazole-4-carboxamide, 4-Isoxazolecarboxamide, 3-methyl-N-(4-(trifluoromethyl)phenyl)-. Our catalogue number for this item is ZX-021966.
What are the formula and molar mass of Leflunomide EP Impurity E?
For Leflunomide EP Impurity E, its formula is C12H9F3N2O2 and its molar mass is 270.21 g/mol. The systematic (IUPAC) name is 3-methyl-N-[4-(trifluoromethyl)phenyl]-1,2-oxazole-4-carboxamide. InChIKey SNUBGILHVSSQAY-UHFFFAOYSA-N lets you match it in any structure database.
How is Leflunomide EP Impurity E used in pharmaceutical QC?
Leflunomide EP Impurity E 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 E?
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 E?
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 E to my country?
Yes. Because Leflunomide EP Impurity E 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.

More Leflunomide standards

More in Pharmacopeial Impurities (EP / USP / BP)

Have a list of compounds to price?

Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.

Bulk CAS lookup Open quote list
Compare 0 of 4Compare now