Gentamicin Impurity 12 CAS 25876-11-3
| CAS No. | 25876-11-3 |
| Molecular Formula | C20H41N5O7 |
| Molecular Weight | 463.57 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Gentamicin Impurity 12 (CAS 25876-11-3) is a certified pharmaceutical impurity reference standard with the molecular formula C20H41N5O7 and a molecular weight of 463.57 g/mol.
Based on its molecular formula C20H41N5O7, Gentamicin Impurity 12 contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 463.57 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C20H41N5O7 |
| Molecular Weight | 463.57 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 5 |
Related Gentamicin Standards
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- 3-Cyano-N-((5-(furan-2-carbonyl)thiophen-2-yl)methyl)benzamide (CAS 1797599-83-7)
- 1-(3-aminophenyl)azetidin-2-one (CAS 1456595-12-2)
- 4-Cyclopropoxy-3-isopropyl-N,N-dimethylpyridin-2-amine (CAS 1243284-52-7)
- 2,2-dimethyl-N-(1H-pyrazol-4-yl)propanamide (CAS 1153795-04-0)
- 1-Methyl-3-(thiophen-3-yl)-1H-pyrazole-4-carboxylic acid (CAS 1248613-51-5)
- Tert-butyl (r)-(1-(cyclopentanecarbonyl)pyrrolidin-3-yl)carbamate (CAS 1286207-11-1)
- Semaglutide Impurity 12 (CAS CATO-C4X-222612)
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