N-nitroso Rifamycin Impurity 17 CAS CATO-C4X-200417
| CAS No. | CATO-C4X-200417 |
| Molecular Formula | C49H60N7O12 |
| Molecular Weight | 939.04 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of N-nitroso Rifamycin Impurity 17 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies N-nitroso Rifamycin Impurity 17 (CAS CATO-C4X-200417), a pharmacopoeial impurity reference standard (molecular formula C49H60N7O12, MW 939.04 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, N-nitroso Rifamycin Impurity 17 (C49H60N7O12) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 23.5, corresponding to approximately 23 ring(s) or double-bond equivalent(s). With a molecular weight of 939.04 g/mol, it falls into the high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), N-nitroso Rifamycin Impurity 17 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 | C49H60N7O12 |
| Molecular Weight | 939.04 g/mol |
| Purity | >90% |
| Storage | Store in a cool place (≤25°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) | 23.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 7 |
Related N Standards
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Recommended Standards
- Fluorescein-PEG6-bis-NHS ester (CAS 2055105-59-2)
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- 7-Chloro-1H-pyrrolo[2,3-c]pyridine-3-carbonitrile (CAS 2092080-03-8)
- Tris(2-ethylhexyl) Phosphite (CAS 301-13-3)
- 5-(2-Bromophenyl)-1H-1,2,3-triazole (CAS 369363-78-0)
- 3,8-Diamino-5-methyl-6-phenylphenanthridin-5-ium bromide hydrate (CAS 37889-60-4)
- Methyl 2,6-difluoro-3-(trifluoromethyl)benzoate (CAS 2089258-73-9)
- 7-((4-Cyclopropyl-2-fluorophenyl)amino)benzo[d]isothiazole-6-carboxylic acid (CAS 1203662-87-6)
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