Levothyroxine Impurity 24 CAS CATO-C4X-167824
| CAS No. | CATO-C4X-167824 |
| Molecular Formula | C15H9I4NO5 |
| Molecular Weight | 790.85 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Levothyroxine Impurity 24 (C15H9I4NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 790.85 g/mol, it falls into the high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Levothyroxine Impurity 24 (CAS CATO-C4X-167824), a pharmacopoeial impurity reference standard (molecular formula C15H9I4NO5, MW 790.85 g/mol) used for the identification and quantification of trace impurities in APIs.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Levothyroxine Impurity 24 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C15H9I4NO5 |
| Molecular Weight | 790.85 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
Related Levothyroxine Standards
- Levothyroxine Methyl Ester (CAS 32180-11-3)
- Levothyroxine N-Methylamide (CAS 2088032-52-2)
- Levothyroxine Impurity 30 (CAS 107849-54-7)
- Levothyroxine impurity 47 (CAS CATO-C4X-167847)
- Levothyroxine D3 (CAS CATO-C4X-167856)
- Levothyroxine Impurity 20 (CAS 7069-47-8)
- Levothyroxine Impurity 27 (CAS 671235-41-9)
- Levothyroxine Ethyl Ester (CAS 76353-71-4)
Recommended Standards
- Cefdinir Impurity 76 (CAS CATO-C4X-121076)
- Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II) (CAS 14564-35-3)
- Cefdinir Impurity 58 (CAS CATO-C4X-121058)
- (1R,2R)-Rel-N,N'-(cyclohexane-1,2-diyl)bis(2-(diphenylphosphino)-1-naphthamide) (CAS 178231-62-4)
- Clonidine EP Impurity C (CAS 608-31-1)
- Emedastine Impurity 40 (CAS CATO-C4X-226740)
- Labetalol Impurity 55 (CAS CATO-C4X-246655)
- N-(2,4-difluorophenyl)-2,2-difluoro-2-(3-(trifluoromethyl)phenoxy)acetamide (CAS 338792-01-1)
- 5-(2-Methoxyethyl)pyridazin-3(2H)-one (CAS 2817636-27-2)
- (2-cyanothiazol-5-yl)boronic acid (CAS 947281-57-4)
- Isavuconazole Impurity 148 (CAS CATO-C4X-1236148)
- Methyl 8-bromo-4-chloro-6-methylquinoline-2-carboxylate (CAS 1260890-40-1)
- Decitabine Impurity 28 (CAS 1126-46-1)
- Semaglutide Impurity 13 (CAS CATO-C4X-222613)
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 18665070610 / Nicole.chen@cato-chem.com