Netilmicin EP Impurity C CAS 63721-52-8
| CAS No. | 63721-52-8 |
| Molecular Formula | C23H45N5O7 |
| Molecular Weight | 503.63 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Netilmicin EP Impurity C 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.
CATO supplies Netilmicin EP Impurity C (CAS 63721-52-8), a pharmacopoeial impurity reference standard (molecular formula C23H45N5O7, MW 503.63 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Netilmicin EP Impurity C is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 503.63 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 | C23H45N5O7 |
| Molecular Weight | 503.63 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 5 |
Related Netilmicin Standards
Recommended Standards
- Ulipristal Impurity 10 (CAS 244206-56-2)
- N-(Propargyl-PEG2)-N-Boc-PEG3-t-butyl ester (CAS 2093152-78-2)
- XL888, >98% (HPLC) (CAS 1149705-71-4)
- Fexaramate (CAS 592524-75-9)
- Omarigliptin Impurity 8 (CAS CATO-C4X-11478)
- Minodronic Impurity 10 (CAS 4437-06-3)
- Evocalcet impurity 56 (CAS 870966-25-9（free base）)
- 1-(4-Chloro-1H-indol-2-yl)ethanone (CAS 888723-87-3)
- 1-(Phenoxymethyl)cyclopropane-1-carboxylic acid (CAS 1387575-93-0)
- 4-((Methylamino)methyl)-2-nitrophenol (CAS 1082820-76-5)
- 1-Azido-1-deoxy-β-D-glucopyranoside (CAS 20379-59-3)
- Promethazine EP Impurity A (CAS 92-84-2)
- Tert-butyl ((3R,4R)-3-formyltetrahydro-2H-pyran-4-yl)carbamate (CAS 2165680-22-6)
- Tirzepatide Impurity 61 (CAS CATO-C4X-324061)
Why CATO?
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