Determine the necessary mass, volume, or concentration for preparing a solution.
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Moligand™, ≥98% Moligand™ for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Store at 2-8°C Ships Wet ice Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 3 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Leflunomide is a pyrimidine synthesis inhibitor belonging to the DMARD, used as an immunosuppressant agent.
An inhibitor of Cox-2 and tyrosine kinase.
| ALogP | 2.5 |
|---|
| Pubchem Sid | 504750729 |
|---|---|
| Pubchem Sid Url | https://pubchem.ncbi.nlm.nih.gov/substance/504750729 |
| Canonical Smiles | CC1=C(C=NO1)C(=O)NC2=CC=C(C=C2)C(F)(F)F |
| IUPAC Name | 5-methyl-N-[4-(trifluoromethyl)phenyl]-1,2-oxazole-4-carboxamide |
| InChIKey | VHOGYURTWQBHIL-UHFFFAOYSA-N |
| 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) |
| Isomeric SMILES | CC1=C(C=NO1)C(=O)NC2=CC=C(C=C2)C(F)(F)F |
| WGK Germany | 3 |
| RTECS | NY2354200 |
| Molecular Weight | 270.21 |
| Reaxy-Rn | 4323174 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=4323174&ln= |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Benzenoids |
| Class | Benzene and substituted derivatives |
| Subclass | Anilides |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Aromatic anilides |
| Alternative Parents | Trifluoromethylbenzenes Isoxazoles Heteroaromatic compounds Secondary carboxylic acid amides Oxacyclic compounds Azacyclic compounds Organopnictogen compounds Organooxygen compounds Organonitrogen compounds Organofluorides Organic oxides Hydrocarbon derivatives Alkyl fluorides |
| Molecular Framework | Aromatic heteromonocyclic compounds |
| Substituents | Aromatic anilide - Trifluoromethylbenzene - Azole - Isoxazole - Heteroaromatic compound - Carboxamide group - Secondary carboxylic acid amide - Carboxylic acid derivative - Organoheterocyclic compound - Azacycle - Oxacycle - Organic oxide - Organooxygen compound - Organonitrogen compound - Organofluoride - Organohalogen compound - Organopnictogen compound - Alkyl fluoride - Organic oxygen compound - Alkyl halide - Organic nitrogen compound - Hydrocarbon derivative - Aromatic heteromonocyclic compound |
| Description | This compound belongs to the class of organic compounds known as aromatic anilides. These are aromatic compounds containing an anilide group in which the carboxamide group is substituted with an aromatic group. They have the general structure RNC(=O)R', where R= benzene, and R = aryl group. |
| External Descriptors | monocarboxylic acid amide - isoxazoles - (trifluoromethyl)benzenes |
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Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
| Certificate of Analysis | Aug 23, 2025 | L129518 | |
| Certificate of Analysis | Sep 14, 2023 | L129518 | |
| Certificate of Analysis | Sep 14, 2023 | L129518 | |
| Certificate of Analysis | Sep 14, 2023 | L129518 | |
| Certificate of Analysis | Mar 16, 2023 | L129518 | |
| Certificate of Analysis | Jan 29, 2023 | L129518 | |
| Certificate of Analysis | Nov 22, 2021 | L129518 |
| Solubility | Soluble in DMSO (54 mg/ml at 25 °C), ethanol (54 mg/ml at 25 °C), and water (<1 mg/ml at 25 °C). |
|---|---|
| Sensitivity | Heat sensitive |
| Melt Point(°C) | 166.5°C |
| Molecular Weight | 270.210 g/mol |
| XLogP3 | 2.500 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 2 |
| Exact Mass | 270.062 Da |
| Monoisotopic Mass | 270.062 Da |
| Topological Polar Surface Area | 55.100 Ų |
| Heavy Atom Count | 19 |
| Formal Charge | 0 |
| Complexity | 327.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
| 1. Qinqin Cui, Hongyun Bi, Zhanyun Lv, Qigui Wu, Jianfeng Hua, Bokai Gu, Chanjuan Huo, Mingmin Tang, Yanqin Chen, Chongjiu Chen, Sihan Chen, Xinrui Zhang, Zhangrui Wu, Zhengkai Lao, Nengyin Sheng, Chengyong Shen, Yongdeng Zhang, Zhi-Ying Wu, Zhigang Jin, Peiguo Yang, Huaqing Liu, Jinsong Li, Ge Bai. (2023) Diverse CMT2 neuropathies are linked to aberrant G3BP interactions in stress granules. CELL, [PMID:36738734] [10.1016/j.cell.2022.12.046] |
| 2. Yizhou Gao, Xiaohui Xiong, Hui Wang, Jiajing Wang, Yan Bi, Yuqing Yan, Zhongye Cao, Dayong Li, Fengming Song. (2021) Ero1-Pdi1 module-catalysed dimerization of a nucleotide sugar transporter, FonNst2, regulates virulence of Fusarium oxysporum on watermelon. ENVIRONMENTAL MICROBIOLOGY, 24 (3): (1200-1220). [PMID:34587346] [10.1111/1462-2920.15789] |
| 3. Fenfen Ji, Pingmei Huang, Qiming Zhou, Lok Hin Ko, Qinyao Wei, Charis Cheuk-Lok Chan, Danyu Chen, Huarong Chen, Wei Kang, Alvin Ho-Kwan Cheung, Cillian H. Cheng, Jianming Shen, Yasi Pan, Ying Jiao, Lin Zhu, Tat Wai Chik, Peisi Xie, Xiao Liang, Onno Kranenburg, Zongwei Cai, Jun Yu, Chi Chun Wong. (2026) Compartmentalized branched-chain amino acid metabolism orchestrates colorectal cancer dissemination via an UMP-vimentin axis. Cell Metabolism, [PMID:41653924] [10.1016/j.cmet.2026.01.007] |
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