Levothyroxine Impurity 17 CAS 51-26-3
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 51-26-3 |
| Molecular Formula | C15H11I3O4 |
| Molecular Weight | 635.96 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Levothyroxine Impurity 17 (CAS 51-26-3) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C15H11I3O4. Molecular weight: 635.96 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C15H11I3O4 |
| Molecular Weight | 635.96 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, 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; 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.) | 1957 |
| Halogen Content | I-containing |
Related Levothyroxine Standards
- Levothyroxine Impurity 14 (CAS 3914-31-6)
- Levothyroxine EP Impurity C (CAS 51-24-1)
- Levothyroxine Impurity 16 (CAS 92905-78-7)
- 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)
- Levothyroxine Impurity 42 (CAS 4618-45-5)
- Levothyroxine Impurity 15 (CAS CATO-C4X-167815)
Recommended Standards
- delafloxacin Impurity 5 (CAS CATO-C4X-26375)
- N-[1-(Cyclohexylmethyl)-4-piperidinyl]-2-[hexahydro-4-(1-methylethyl)-1H-1,4-diazepin-1-yl]-6-methoxy-7-[3-(1-piperidinyl)propoxy]-4-quinazolinamine (CAS 1320288-19-4)
- Delafloxacin Impurity 9 (CAS 2097714-09-3)
- Vonoprazan Impurity 177 (CAS CATO-C4X-1020177)
- Paclitaxel Impurity 49 (CAS 2180123-01-5)
- 5-Chloro-6-fluoro-1H-indole-2-carboxylic acid (CAS 169674-55-9)
- 2,4-Difluoro-N-(3-(6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)propyl)benzamide (CAS 1021252-66-3)
- 1-(Benzo[d][1,3]dioxol-5-ylmethyl)-2-methyl-1H-imidazole (CAS 790661-16-4)
- 1-(tert-Butyl) 3-methyl 5-(2,4-difluorophenyl)-4-methoxy-1H-pyrrole-1,3-dicarboxylate (CAS 2258638-53-6)
- Sperm Peptide P10G (H-2424.0001) (CAS 137353-73-2)
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