Levothyroxine Impurity 42 CAS 4618-45-5
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 4618-45-5 |
| Molecular Formula | C13H7I3O4 |
| Molecular Weight | 607.91 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Levothyroxine Impurity 42 (CAS 4618-45-5) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C13H7I3O4. Molecular weight: 607.91 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C13H7I3O4 |
| Molecular Weight | 607.91 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | I-containing |
Related Levothyroxine Standards
- Levothyroxine Impurity 16 (CAS 92905-78-7)
- Levothyroxine EP Impurity C (CAS 51-24-1)
- Levothyroxine Impurity 58 (CAS 176258-87-0)
- Levothyroxine Impurity 14 (CAS 3914-31-6)
- Levothyroxine Impurity 17 (CAS 51-26-3)
- Levothyroxine EP Impurity A (CAS 6893-02-3)
- Levothyroxine EP Impurity K (CAS 5817-39-0)
- Levothyroxine EP Impurity K (R-Isomer) (CAS 66701-15-3)
Recommended Standards
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- methyl 3-(chlorosulfonyl)-2-phenylpropanoate (CAS 1803560-95-3)
- 1-(1-Methyl-1H-indol-3-yl)-3-(thiazol-2-yl)urea (CAS 899947-32-1)
- Neuropeptide Y, human (CAS 98264-90-5)
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