Dopamine Impurity 111 CAS CATO-C4X-1908111
| CAS No. | CATO-C4X-1908111 |
| Molecular Formula | C18H17NO4 |
| Molecular Weight | 311.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Dopamine Impurity 111 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.
As a process- or degradation-related impurity, Dopamine Impurity 111 (CAS CATO-C4X-1908111, C18H17NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Dopamine Impurity 111 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 311.33 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C18H17NO4 |
| Molecular Weight | 311.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Dopamine Standards
- Dopamine Impurity 101 (CAS CATO-C4X-1908101)
- Dopamine impurity 110 (CAS CATO-C4X-1908110)
- Dopamine Impurity 33 (CAS CATO-C4X-190833)
- Dopamine Impurity 35 (CAS CATO-C4X-190835)
- Dopamine Impurity 48 (CAS CATO-C4X-190848)
- Dopamine Impurity 42 (CAS CATO-C4X-190842)
- Dopamine Impurity 108 (CAS CATO-C4X-1908108)
- Dopamine Impurity 77 (CAS 854733-87-2)
Recommended Standards
- Indobufen Impurity 91 (CAS CATO-C4X-179291)
- Oxaprozin Impurity 2 (CAS CATO-C4X-19182)
- Indobufen Impurity 9 (CAS 76553-18-9)
- Pimavanserin Impurity 67 (CAS CATO-C4X-193867)
- Cefamandole Impurity 19 (CAS CATO-C4X-122119)
- Dabigatran Impurity 4 (CAS 1408238-36-7)
- Sitagliptin Impurity 87 (CAS CATO-C4X-114487)
- 2-Chloro-N-{5H-chromeno[4,3-d]pyrimidin-2-yl}benzamide (CAS 866041-25-0)
- N-Methyl-N-(tetrahydro-2H-pyran-4-ylmethyl)-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridine-3-carboxam (CAS 1220034-14-9)
- 5-Chloro-2H-indazole-6-carboxylic acid (CAS 1227270-44-1)
- (6-Chloro-4-trifluoromethyl-pyridin-2-ylsulfanyl)-acetic acid [1-dimethylamino-meth-(E)-ylidene]-hydrazide (CAS 1858264-43-3)
- 2-((7-Chloroquinazolin-4-yl)amino)propanoic acid (CAS 1008069-39-3)
- (2S,4R)-1-(tert-Butoxycarbonyl)-4-((methylsulfonyl)oxy)pyrrolidine-2-carboxylic acid (CAS 202477-59-6)
- Semaglutide Impurity 133 (CAS CATO-C4X-2226133)
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