Sulfadimethoxine Impurity 22 CAS CATO-C4X-150422
| CAS No. | CATO-C4X-150422 |
| Molecular Formula | C5H4N2O3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Sulfadimethoxine Impurity 22.
CATO supplies Sulfadimethoxine Impurity 22 (CAS CATO-C4X-150422), a pharmacopoeial impurity reference standard (molecular formula C5H4N2O3Na, MW 163.09 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Sulfadimethoxine Impurity 22 (C5H4N2O3Na) 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
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 | C5H4N2O3 2*Na |
| Molecular Weight | 163.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Nitrogen Atoms | 2 |
Related Sulfadimethoxine Standards
- Sulfadimethoxine-D4 (CAS 1020719-80-5)
- Sulfadimethoxine Sodium Salt (CAS 1037-50-9)
- Sulfadimethoxine EP Impurity D (CAS 121-57-3)
- Sulfadimethoxine EP Impurity C (CAS 121-62-0)
- Sulfadimethoxine (CAS 122-11-2)
- Sulfadimethoxine Impurity (CAS 13145-56-7)
- Sulfadimethoxine EP Impurity F (CAS 19868-00-9)
- Sulfadimethoxine EP Impurity A (CAS 3289-50-7)
Recommended Standards
- Dalbavancin Impurity 19 (CAS CATO-C4X-160219)
- Levocetirizine Impurity 48 (CAS CATO-C4X-108348)
- Bisacodyl Impurity 17 (CAS CATO-C4X-203717)
- (S)-1-Methoxy-5-oxopyrrolidine-2-carboxamide (CAS 148650-26-4)
- 4-(Adamantan-1-yl)-6-amino-1,3,5-triazin-2(1H)-one (CAS 151250-94-1)
- Clopidogrel Impurity 123 (CAS CATO-C4X-1029123)
- 2-Methyl-5-nitroaniline hydrate (CAS 304851-86-3)
- 3-(5-Fluoro-2-methoxyphenyl)-3-methylbutanoic acid (CAS 1226235-15-9)
- Methyl 5-((naphthalen-2-yloxy)methyl)furan-2-carboxylate (CAS 402736-34-9)
- Endo-Pro36-Tirzepatide (CAS CATO-CPTD788688)
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