Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Leflunomide, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Leflunomide impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Leflunomide-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.
Our Leflunomide-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.
Leflunomide Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Leflunomide-d4 | Stable Isotopes | CS-O-11466 | 1189987-23-2 | In Stock |
| 5-Hydroxy Leflunomide-d4 (Metabolite M2) | Stable Isotopes | CS-T-79405 | 1794789-76-6 | Enquire |
| 5-Methylisoxazole-3-carboxylic-d4 Acid | Stable Isotopes | CS-T-58317 | 1267623-84-6 | Enquire |
| Leflunomide 13C6 | Stable Isotopes | CS-EK-00475 | 75706-12-6 unlabeled | Enquire |
API
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Leflunomide | API | CS-O-01811 | 75706-12-6 | In Stock |
Impurity
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 5-METHYL-N-(4-((4-(TRIFLUOROMETHYL)PHENYL)CARBAMOYL)PHENYL)I... | Impurity | CS-O-44889 | Not Available | Enquire |
| Leflunomide EP Impurity A | Impurity | CS-T-62361 | 455-14-1 | In Stock |
| Leflunomide EP Impurity C | Impurity | CS-O-13276 | 61643-23-0 | In Stock |
| Leflunomide EP Impurity E | Impurity | CS-O-05797 | 208401-20-1 | In Stock |
| Leflunomide EP Impurity F | Impurity | CS-O-13278 | 1403564-06-6 | In Stock |
| Leflunomide EP Impurity G | Impurity | CS-O-13279 | 724429-16-7 | In Stock |
| Leflunomide EP Impurity H | Impurity | CS-O-13280 | 24522-30-3 | In Stock |
| Leflunomide Impurity 4 | Impurity | CS-O-57766 | 1903709-86-3 | Enquire |
| Leflunomide Metabolite Ethyl Analog | Impurity | CS-O-44398 | Not Available | Enquire |
| Leflunomide Related Compound B | Impurity | CS-T-04169 | 108605-62-5 | In Stock |
| 2-Cyano-N-[2-(trifluoromethyl)phenyl]acetamide | Impurity | CS-M-27957 | 419534-37-5 | Enquire |
| 3-Trifluoromethyl Teriflunomide | Impurity | CS-O-33469 | 63927-52-6 | Enquire |
Intermediate
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 5-Methylisoxazole-4-carboxylic Acid | Intermediate | CS-O-32251 | 42831-50-5 | In Stock |
| Ethyl 3-methylisoxazole-4-carboxylate | Intermediate | CS-O-14369 | 20328-15-8 | In Stock |
Fine Chemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Ethyl 5-methylisoxazole-4-carboxylate | Fine Chemicals | CS-MM-48265 | 51135-73-0 | In Stock |
| 3-Methylisoxazole-4-carboxylic Acid | Fine Chemicals | CS-T-34159 | 17153-20-7 | Enquire |
Secondary Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Leflunomide | Secondary Standards | CS-SS-24378-1GM | 75706-12-6 | Enquire |
| Leflunomide Related Compound A | Secondary Standards | CS-SS-24542-200MG | 455-14-1 | Enquire |
| Leflunomide Related Compound B | Secondary Standards | CS-SS-25626-50MG | 108605-62-5 | Enquire |