Iguratimod Impurity 52 CAS 82780-78-7
| CAS No. | 82780-78-7 |
| Molecular Formula | C13H11NO4 |
| Molecular Weight | 245.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO supplies Iguratimod Impurity 52 (CAS 82780-78-7), a pharmacopoeial impurity reference standard (molecular formula C13H11NO4, MW 245.23 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Iguratimod Impurity 52 (C13H11NO4) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C13H11NO4 |
| Molecular Weight | 245.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 1 |
Related Iguratimod Standards
- Iguratimod Impurity 136 (CAS CATO-C4X-1826136)
- Iguratimod Impurity 145 (CAS CATO-C4X-1826145)
- Iguratimod Impurity 4 (CAS 84594-95-6)
- Iguratimod Impurity 87 (CAS CATO-C4X-182687)
- Iguratimod Impurity 86 (CAS CATO-C4X-182686)
- Iguratimod Impurity 37 (CAS 1340086-28-3)
- Iguratimod Impurity 115 (CAS CATO-C4X-1826115)
- Iguratimod Impurity 126 (CAS CATO-C4X-1826126)
Recommended Standards
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- Eltrombopag Impurity 53 (CAS CATO-C4X-119853)
- Nafamostat Impurity 44 (CAS CATO-C4X-133244)
- Tocopherol Impurity 36 (CAS CATO-C4X-119536)
- Gemfibrozil Impurity 11 (CAS 31264-51-4)
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- 1-[(ethanesulfonyl)methyl]-4-nitrobenzene (CAS 1612-41-5)
- 4-Methyl-2-oxabicyclo[2.2.2]octan-3-one (CAS 61405-06-9)
- tert-Butyl methyl(4-methylenecyclohexyl)carbamate (CAS 1415813-02-3)
- 4-(Propan-2-yl)morpholine-2-carbonitrile (CAS 1461715-69-4)
- Fibrinopeptide B (human) (CAS 36204-23-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com