N-Nitroso Diphenhydramine EP Impurity A-d5 CAS CATO-C4X-142419
| CAS No. | CATO-C4X-142419 |
| Molecular Formula | - |
| Molecular Weight | 275.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
N-Nitroso Diphenhydramine EP Impurity A-d5 (CAS CATO-C4X-142419) is a certified pharmaceutical impurity reference standard with the molecular formula C16H13D5N2O2 and a molecular weight of 275.36 g/mol.
Based on its molecular formula C16H13D5N2O2, N-Nitroso Diphenhydramine EP Impurity A-d5 contains deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 275.36 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C16H13D5N2O2 |
| Molecular Weight | 275.36 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related N Standards
- N-Nitroso Temazepam EP Impurity A (CAS 51145-18-7)
- N-Nitroso Almonertinib impurity 4 (CAS CATO-C4X-28924)
- N-Nitroso Ranolazine Impurity 14 (CAS CATO-C4X-102614)
- N-Nitroso Azelastine EP Impurity B (CAS CATO-C4X-139641)
- N-Nitroso Venlafaxine Impurity 52 (CAS CATO-C4X-143452)
- N-Nitroso Bilastine impurity 129 (CAS CATO-C4X-2253129)
- N-Nitroso Linagliptin impurity 100 (CAS CATO-C4X-1101100)
- N-Nitroso Clozapine EP Impurity A (CAS 90353-66-5)
Recommended Standards
- tert-Butyl 6-(methylsulfonyl)-2-azaspiro[3.3]heptane-2-carboxylate (CAS 2376599-46-9)
- N-(4-Methyl-thiazol-2-yl)-2-m-tolylamino-propionamide (CAS 1008497-01-5)
- tert-Butyl 5-cyclopropyl-4,4-dimethyl-1,2,3-oxathiazolidine-3-carboxylate 2-oxide (CAS 2770106-06-2)
- 2-(2,5-Dimethyl-phenylamino)-N-thiazol-2-yl-propionamide (CAS 1008497-49-1)
- Levetiracetam EP Impurity A (CAS 103833-72-3)
- Phenylephrine Impurity 82 (CAS CATO-C4X-146782)
- Lefamulinum Impurity 10 (CAS CATO-C4X-304710)
- N-(3-amino-4-chlorophenyl)-2-ethoxyacetamide (CAS 954565-51-6)
- 6-bromo-8-methoxy-quinazolin-2-amine (CAS 2306263-67-0)
- bis(1-[(2-methoxypyridin-4-yl)methyl]guanidine), sulfuric acid (CAS 1864051-86-4)
- 5-(3-Nitrophenyl)-1,2,4-triazin-3-amine (CAS 886497-38-7)
- 1-(2-Methylpyrazolo[1,5-a]pyrimidin-6-yl)-3-phenethylurea (CAS 1788676-44-7)
- 3-Aminoquinoline-7-carboxylic acid (CAS 1824051-45-7)
- [D-His]-Semaglutide B (x TFA Salt) (CAS CATO-C4X-2226117)
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