Methoxamine Impurity 23 CAS 100840-93-5
| CAS No. | 100840-93-5 |
| Molecular Formula | C9H13NO2 |
| Molecular Weight | 167.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Methoxamine Impurity 23 (C9H13NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO supplies Methoxamine Impurity 23 (CAS 100840-93-5), a pharmacopoeial impurity reference standard (molecular formula C9H13NO2, MW 167.21 g/mol) used for the identification and quantification of trace impurities in APIs.
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 | C9H13NO2 |
| Molecular Weight | 167.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
Related Methoxamine Standards
- Methoxamine Impurity 13 (CAS 938-46-5)
- Methoxamine Impurity 10 (CAS 1201-38-3)
- Methoxamine Impurity 9 (CAS 49710-99-8)
- Methoxamine Impurity 1 (CAS 5803-30-5)
- Methoxamine Impurity 17 (CAS 776-99-8)
- Methoxamine Impurity 6 (CAS 1835-04-7)
- Methoxamine Impurity 18 (CAS CATO-C4X-202218)
- Methoxamine Impurity 8 (CAS CATO-C4X-20228)
Recommended Standards
- Dopamine EP Impurity B (CAS 554-52-9)
- Metaraminol Impurity 27 (CAS 21480-43-3)
- Dopamine EP Impurity A (CAS 3213-30-7)
- Metaraminol Impurity 30 (CAS 54-49-9)
- Topiramate Didesacetal Impurity Formate (CAS 106881-42-9（free base）)
- Cyclophosphamide impurity 31 (CAS 2517939-95-4(free base))
- Sulpiride Impurity 12 (CAS CATO-C4X-187612)
- Pyrazolo[1,5-a]pyridine-2-carboxamide (CAS 885275-08-1)
- 2-((4,5-Dibenzyl-4H-1,2,4-triazol-3-yl)thio)-N-(4-ethylphenyl)acetamide (CAS 335400-05-0)
- 2-(Butylthio)tetrahydro-2H-pyran (CAS 16315-52-9)
- (S)-3-(3-Bromo-4-fluorophenyl)-2-((tert-butoxycarbonyl)amino)propanoic acid (CAS 1329606-04-3)
- 3-(2-Methylpyrimidin-4-yl)benzoic acid (CAS 924859-13-2)
- Tert-butyl 2-(adamantan-2-ylidene)hydrazine-1-carboxylate (CAS 72620-76-9)
- [β-Asp]9-Semaglutide (CAS CATO-CPTD788605)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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