Rupatadine Impurity 25 CAS 499-81-0
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 499-81-0 |
| Molecular Formula | C7H5NO4 |
| Molecular Weight | 167.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Rupatadine Impurity 25 (CAS 499-81-0) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C7H5NO4. Molecular weight: 167.12 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C7H5NO4 |
| Molecular Weight | 167.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Rupatadine Standards
- Rupatadine impurity 9 (CAS 41711-38-0)
- Rupatadine Impurity 23 (CAS 21636-51-1)
- Rupatadine Impurity 3 (CAS 102074-19-1)
- Rupatadine Impurity 24 (CAS 100910-66-5)
- Rupatadine Impurity 5 (CAS 35991-75-4)
- Rupatadine Impurity 36 (CAS 169253-15-0)
- Rupatadine Fumaric Acid (CAS 182349-12-8)
- Rupatadine impurity 1 (CAS 1118754-56-5)
Recommended Standards
- 73900-07-9 (~2~H_3_)Methyl trifluoromethanesulfonate DTXSID90583675 (CAS 73900-07-9)
- Moxifloxacin Impurity 91 (CAS 89-00-9)
- 5-Nitrobenzo[d][1,3]dioxole (CAS 2620-44-2)
- Ambrisentan Impurity 4 (CAS 35144-22-0)
- Paliperidone Impurity 149 (CAS CATO-C4X-1724149)
- Benzyl ((1-(2-aminoethyl)piperidin-3-yl)methyl)(isopropyl)carbamate (CAS 1353967-91-5)
- 2-(Chloromethyl)-3-cyano-4-(difluoromethyl)pyridine-5-acetic acid (CAS 1806005-80-0)
- 3-(4-Methylphenyl)-1,2,5-oxadiazole (CAS 10349-07-2)
- 4-(4-Methoxyphenyl)-N-(2-methyl-4-nitrophenyl)thiazol-2-amine (CAS 685108-64-9)
- Copper Peptide ·2 acetate salt (CAS 130120-57-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com