Carbidopa Impurity 24 CAS CATO-C4X-231024
| CAS No. | CATO-C4X-231024 |
| Molecular Formula | C11H16N2O4 |
| Molecular Weight | N/A |
| 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.
Carbidopa Impurity 24 (CAS CATO-C4X-231024) is a certified pharmaceutical impurity reference standard with the molecular formula C11H16N2O4HCl and a molecular weight of 276.72 g/mol.
The molecular framework of Carbidopa Impurity 24 (C11H16N2O4HCl) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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.
As a certified reference material (CRM), Carbidopa 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 | C11H16N2O4 HCl |
| Molecular Weight | 276.72 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Carbidopa Standards
- Carbidopa Impurity 36 (CAS 1026009-73-3)
- Carbidopa EP Impurity B Hydrochloride (CAS 115054-62-1)
- rac-Carbidopa EP Impurity I (CAS 1246819-09-9)
- (S)-(-)-Carbidopa-d3 H2O (ring-d3) (CAS 1276197-58-0)
- Carbidopa-d3 (CAS 1276732-89-8)
- Carbidopa EP Impurity H (CAS 1361017-74-4)
- (S)-(-)-Carbidopa-d5 (CAS 1426174-03-9)
- Carbidopa EP Impurity F (CAS 1458640-32-8)
Recommended Standards
- Letermovir Impurity 36 (CAS CATO-C4X-291536)
- Xanomeline impurity 62 (CAS CATO-C4X-330162)
- Azithromycin EP Impurity F (CAS 612069-28-0)
- 2-Bromo-1-(3,4-dihydroisoquinolin-2(1H)-yl)-2,2-difluoroethan-1-one (CAS 672949-77-8)
- 3-Fluoroquinoline-4-carboxylic acid (CAS 153880-32-1)
- 1-Methyl-N-(2-methylpentyl)piperidin-4-amine (CAS 1096287-90-9)
- O-((2-Methoxypyridin-3-yl)methyl)hydroxylamine (CAS 1002750-85-7)
- (R)-N1,N1-Dimethyl-2-phenylethane-1,2-diamine (CAS 174636-94-3)
- N-[1-(2-chlorophenyl)-1-methoxypropan-2-yl]hydroxylamine (CAS 1443981-08-5)
- Tau Peptide (274-288) trifluoroacetate salt (CAS 330456-39-8)
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