Iguratimod Impurity 82 CAS CATO-C4X-182682
| CAS No. | CATO-C4X-182682 |
| Molecular Formula | C12H9NO4 |
| Molecular Weight | 231.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Iguratimod Impurity 82 (CAS CATO-C4X-182682), a pharmacopoeial impurity reference standard (molecular formula C12H9NO4, MW 231.20 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Iguratimod Impurity 82 (C12H9NO4) is characterized by an amino-acid-derived structure, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C12H9NO4 |
| Molecular Weight | 231.20 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 |
| Nitrogen Atoms | 1 |
Related Iguratimod Standards
- Iguratimod Impurity 126 (CAS CATO-C4X-1826126)
- Iguratimod Impurity 125 (CAS CATO-C4X-1826125)
- Iguratimod Impurity 37 (CAS 1340086-28-3)
- Iguratimod Impurity 86 (CAS CATO-C4X-182686)
- Iguratimod Impurity 136 (CAS CATO-C4X-1826136)
- Iguratimod Impurity 145 (CAS CATO-C4X-1826145)
- Iguratimod Impurity 4 (CAS 84594-95-6)
- Iguratimod Impurity 52 (CAS 82780-78-7)
Recommended Standards
- Nimesulide EP Impurity G (CAS 70995-08-3)
- 3-Hydrazineyl-6-(3-nitrophenyl)pyridazine (CAS 1017117-06-4)
- 2,3-Dioxo-glutaric Acid Diethyl Ester 2-Oxime 2-(Hydroxyimino)-3-oxo-pentanedioic Acid 1,5-Diethyl Ester 2-(Hydroxyimino)-3-oxo-pentanedioic Acid Diethyl Ester 996-75-8 (CAS 996-75-8)
- 3-Methyl-4-(2-nitrobenzylidene)-1H-pyrazol-5(4H)-one (CAS 10234-90-9)
- Topiramate Impurity 37 (CAS 851957-35-2)
- Chlorhexidine Impurity 18 (CAS CATO-C4X-225618)
- Hydroxychloroquine Impurity 31 (CAS CATO-C4X-183531)
- Oxiracetam Impurity 3 (CAS 62613-81-4)
- (E)-1-(2-hydroxyphenyl)-3-(4-isopropylphenyl)prop-2-en-1-one (CAS 73110-49-3)
- Cyclohexyl 5-bromo-2-hydroxybenzoate (CAS 1131587-74-0)
- Allopurinol Impurity 31 (CAS CATO-C4X-145831)
- 2-Fluoro-5-iodothioanisole (CAS 2484889-20-3)
- 5-Chloro-2-(2-((2-chlorobenzyl)thio)pyridin-3-yl)benzo[d]oxazole (CAS 400085-45-2)
- 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
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com