Levothyroxine EP Impurity A CAS 6893-02-3
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 6893-02-3 |
| Molecular Formula | C15H12I3NO4 |
| Molecular Weight | 650.97 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Levothyroxine EP Impurity A (CAS 6893-02-3), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C15H12I3NO4. Molecular weight: 650.97 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C15H12I3NO4 |
| Molecular Weight | 650.97 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
Related Levothyroxine Standards
- Levothyroxine EP Impurity K (CAS 5817-39-0)
- Levothyroxine EP Impurity K (R-Isomer) (CAS 66701-15-3)
- Levothyroxine Impurity 15 (CAS CATO-C4X-167815)
- Levothyroxine Impurity 14 (CAS 3914-31-6)
- Levothyroxine Impurity 17 (CAS 51-26-3)
- Levothyroxine EP Impurity C (CAS 51-24-1)
- Levothyroxine Impurity 16 (CAS 92905-78-7)
- Levothyroxine EP Impurity B (CAS 1628720-66-0)
Recommended Standards
- Liothyronine related impurity, (R)-2-amino (CAS 5714-08-9)
- Uvarimacrophin A (CAS 167425-75-4)
- N-[(8α,9R)-6'-Methoxycinchonan-9-yl]-N'-[[(1R,4aS,10aR)-1,2,3,4,4a,9,10,10a-octahydro-1,4a-dimethyl-7-(1-methylethyl)-1-phenanthrenyl]methyl]thiourea (CAS 1314080-83-5)
- Etizolam Impurity 31 (CAS CATO-C4X-350931)
- Epinephrine Impurity 92 (CAS CATO-C4X-184992)
- Teprenone impurity 47 (CAS CATO-C4X-208147)
- N-Chloro-p-toluenesulfonamide (CAS 144-86-5)
- 2-Ethoxy-6-fluoro-benzonitrile 2-ethoxy-6-fluorobenzonitrile 2-fluoro-6-ethoxybenzonitrile 119584-73-5 (CAS 119584-73-5)
- 1,4-Dimethylpyrazole (CAS 1072-68-0)
- Semaglutide impurity 203 (CAS CATO-C4X-2226203)
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