Sulfadimethoxine Impurity 21 CAS CATO-C4X-150421
| CAS No. | CATO-C4X-150421 |
| Molecular Formula | C11H10Cl2N4O3S |
| Molecular Weight | 349.19 g/mol |
| 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 21.
Sulfadimethoxine Impurity 21 (CAS CATO-C4X-150421) is a certified pharmaceutical impurity reference standard with the molecular formula C11H10Cl2N4O3S and a molecular weight of 349.19 g/mol.
Sulfadimethoxine Impurity 21 (C11H10Cl2N4O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Sulfadimethoxine Impurity 21 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 | C11H10Cl2N4O3S |
| Molecular Weight | 349.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Sulfadimethoxine Standards
- Sulfadimethoxine EP Impurity B (CAS 555-25-9)
- Sulfadimethoxine Related Compound 1 (CAS 74220-53-4)
- Sulfadimethoxine-D6 (CAS 73068-02-7)
- Sulfadimethoxine-D4 (CAS 1020719-80-5)
- Sulfadimethoxine (CAS 122-11-2)
- Sulfadimethoxine Impurity 13 (CAS CATO-C4X-150413)
- Sulfadimethoxine EP Impurity F (CAS 19868-00-9)
- Sulfadimethoxine Impurity (CAS 13145-56-7)
Recommended Standards
- 3-(2,4-Dichloro-5-fluorophenyl)-1-(p-tolyl)-1H-pyrazole-4-carbaldehyde (CAS 618098-95-6)
- Crisaborole Impurity 27 (CAS 2141947-89-7)
- 2,4-bis(trifluoromethyl)imidazo[1,2-a][1,8] naphthyridine-8-carboxylic acid (CAS 439094-96-9)
- 2-[2-Fluoro-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-1-morpholin-4-yl-ethanone (CAS 1092563-31-9)
- Docetaxel impurity 79 (CAS 194235-02-4)
- Raltitrexed Impurity 34 (CAS CATO-C4X-138634)
- Ilaprazole Impurity 36 (CAS 1018229-53-2)
- 1-(2-Fluorophenyl)ethan-1-one oxime (CAS 364-81-8)
- [2-(4-Nitro-phenyl)-thiazol-4-yl]-methanol (CAS 36094-01-6)
- 1-(Benzyloxy)-2-phenyl-1H-imidazo[4,5-b]pyridine (CAS 339009-95-9)
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