Butalbital Impurity 4 CAS 53943-64-9
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 53943-64-9 |
| Molecular Formula | C12H20N2O3 |
| Molecular Weight | 240.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Butalbital Impurity 4 (CAS 53943-64-9) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C12H20N2O3. Molecular weight: 240.30 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C12H20N2O3 |
| Molecular Weight | 240.30 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 2 |
Related Butalbital Standards
- Butalbital Impurity 3 (CAS 53943-65-0)
- Butalbital Impurity 1 (CAS CATO-C4X-19831)
- Butalbital-D5 (CAS 145243-96-5)
- Butalbital 13C4 (CAS 957494-04-1)
- Butalbital Impurity 7 (CAS CATO-C4X-19837)
- Butalbital Impurity 8 (CAS CATO-C4X-19838)
- Butalbital Impurity 9 (CAS CATO-C4X-19839)
- Butalbital Impurity 6 (CAS 59726-40-8)
Recommended Standards
- Revefenacin Impurity 17 (CAS 96053-48-4)
- Tolterodine Impurity 6 (CAS 209747-04-6)
- Revefenacin impurity 32 (CAS CATO-C4X-203132)
- Lusutrombopag Impurity 35 (CAS CATO-C4X-208435)
- Pranlukast Impurity 1 (CAS 136450-10-7)
- 4-amino-5-{1H,4H,5H,6H-cyclopenta[c]pyrazol-3-yl}-4H-1,2,4-triazole-3-thiol (CAS 893642-81-4)
- 5-Amino-1-(3-chlorophenyl)-1,5-dihydro-4h-pyrazolo[3,4-d]pyrimidin-4-one (CAS 941868-14-0)
- Ethyl (ne)-n-[(4-fluorophenyl)methylene]carbamate (CAS 681260-31-1)
- Rifaximin impurity 11 (CAS 80621-88-1)
- 110207-62-0 Acetyl-Cholecystokinin Octapeptide (2-8) (sulfated) MFCD00133565 (CAS 110207-62-0)
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