Levothyroxine Impurity 38 CAS 1027-28-7
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 1027-28-7 |
| Molecular Formula | C11H11I2NO4 |
| Molecular Weight | 475.02 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Levothyroxine Impurity 38 (CAS 1027-28-7) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C11H11I2NO4. Molecular weight: 475.02 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C11H11I2NO4 |
| Molecular Weight | 475.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
Related Levothyroxine Standards
- Levothyroxine Impurity 18 (CAS 1155-40-4)
- Levothyroxine Impurity 16 (CAS 4192-14-7)
- rac-Levothyroxine EP Impurity J (3,3'-DL-Diiodothyronine) (CAS 70-40-6)
- Levothyroxine EP Impurity J (CAS 4604-41-5)
- Levothyroxine EP Impurity E (CAS 1041-01-6)
- Levothyroxine Impurity 43 (CAS 854646-83-6)
- Levothyroxine Impurity 37 (CAS 94345-95-6)
- Levothyroxine Impurity 36 (CAS 100130-56-1)
Recommended Standards
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- 2,2'-(2,2'-Dichloro-[1,1'-biphenyl]-3,3'-diyl)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) (CAS 2248640-53-9)
- Salbutamol Impurity 99 (CAS 27475-09-8)
- Loratadine EP Impurity C (CAS 165739-83-3)
- 1-(tert-Butyl)-3-methyl-1H-pyrazole-5-carboxamide (CAS 1504561-70-9)
- Chloramphenicol Succinate (CAS 3544-94-3)
- Agomelatine-d6 (CAS 1079389-42-6)
- Yttrium(III) chloride hexahydrate (CAS 10025-94-2)
- Gly-Neuroendocrine Regulatory Peptide-3 (human, mouse, rat) trifluoroacetate salt (CAS 1815618-19-9)
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