Daunorubicin Impurity N3 CAS 29742-69-6
| CAS No. | 29742-69-6 |
| Molecular Formula | C21H17BrO8 |
| Molecular Weight | 477.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 477.26 g/mol gives Daunorubicin Impurity N3 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Daunorubicin Impurity N3 (CAS 29742-69-6), a pharmacopoeial impurity reference standard (molecular formula C21H17BrO8, MW 477.26 g/mol) used for the identification and quantification of trace impurities in APIs.
Daunorubicin Impurity N3 (C21H17BrO8) contains a flavonoid core, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, 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).
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 | C21H17BrO8 |
| Molecular Weight | 477.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Br-containing |
Related Daunorubicin Standards
- Daunorubicin Impurity 16 (CAS CATO-C4X-193716)
- Daunorubicin Impurity 10 (CAS 76034-18-9)
- 3-epi-Daunorubicin (CAS 66322-65-4)
- epi-Daunorubicin (CAS 57918-24-8)
- Daunorubicin EP Impurity B ((S)-Isomer) (CAS 28008-55-1)
- Daunorubicin impurity 13 (Mixture of Epimer) (CAS CATO-C4X-193713)
- Daunorubicin Impurity 15 (CAS 952648-77-0)
- Daunorubicin EP Impurity B (Mixture of Diastereomers) (CAS CATO-C4X-19372)
Recommended Standards
- 5-Hydrazinyl-2,3-diphenylpyrazine (CAS 6969-74-0)
- 5-Nitro-4,6-bis[3-(trifluoromethoxy)phenoxy]pyrimidine (CAS 328289-12-9)
- ((2R,3S,4R,5R)-5-(8-Amino-3H-imidazo[4,5-g]quinazolin-3-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl trihydrogen diphosphate (CAS 61925-59-5)
- Pyrafluprole (CAS 315208-17-4)
- Zolmitriptan Impurity 27 (CAS CATO-C4X-135127)
- Afatinib Impurity 83 (CAS CATO-C4X-100683)
- Flomoxef Impurity 28 (CAS CATO-C4X-138228)
- (2S, 3aS,7aS)-Octahydro-indole-2-carboxylic acid tert-butyl ester (CAS 80876-00-2)
- 6-(4-Methoxyphenyl)benzo[b]pyrrolo[1,2-d][1,4]thiazepin-7-yl acetate (CAS 131403-76-4)
- N-Ethyl-(2-thienylmethyl)amine (CAS 58255-25-7)
- Tadalafil Impurity 26 (CAS 1598416-08-0)
- 2-((1-Ethyl-1H-indol-3-yl)thio)acetonitrile (CAS 61021-36-1)
- n-(3-(3-Methylpiperidin-1-yl)propyl)cyclopropanamine (CAS 1178328-87-4)
- Neuropeptide Y (18-36) (CAS 114495-97-5)
Why CATO?
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