Famciclovir Impurity 4 CAS 172529-93-0
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 172529-93-0 |
| Molecular Formula | C12H14ClN5O4 |
| Molecular Weight | 327.72 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Famciclovir Impurity 4 (CAS 172529-93-0) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C12H14ClN5O4. Molecular weight: 327.72 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C12H14ClN5O4 |
| Molecular Weight | 327.72 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Famciclovir Standards
- Famciclovir-d4 (CAS 1020719-42-9)
- Famciclovir Impurity 8 (CAS 126589-69-3)
- Famciclovir N7-Isomer (CAS 131266-15-4)
- Famciclovir (CAS 104227-87-4)
- Famciclovir Impurity 3 (CAS CATO-C4X-16423)
- Famciclovir Impurity 22 (CAS CATO-C4X-164222)
- Famciclovir Impurity 36 (CAS 172645-79-3)
- Famciclovir Impurity 28 (CAS CATO-C4X-164228)
Recommended Standards
- Ranimustine (CAS 58994-96-0)
- Pigment Red 4 (CAS 2814-77-9)
- 4-((6-Chlorobenzo[d][1,3]dioxol-5-yl)methylene)-2-phenyloxazol-5(4H)-one (CAS 6641-76-5)
- Methotrexate EP Impurity C (CAS 2410-93-7)
- Lornoxicam impurity 53 (CAS 1246819-40-8)
- Rhein 8-ß-D-Glucuronide (CAS 70793-10-1)
- methyl 3-[4-(chloromethyl)-1,3-thiazol-2-yl]benzoate (CAS 479578-92-2)
- N-allyl-2-((4-chloro-N-(3-(trifluoromethyl)phenyl)phenyl)sulfonamido)acetamide (CAS 337922-21-1)
- Lopinavir EP Impurity P (CAS 1217628-64-2)
- Tirzepatide Impurity 48 (CAS CATO-C4X-324048)
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