Azacitidine Impurity 32 CAS 844877-56-1
| CAS No. | 844877-56-1 |
| Molecular Formula | C13H18O9 |
| Molecular Weight | 318.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Azacitidine Impurity 32 (CAS 844877-56-1) is a certified pharmaceutical impurity reference standard with the molecular formula C13H18O9 and a molecular weight of 318.28 g/mol.
Structurally, Azacitidine Impurity 32 (C13H18O9) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 318.28 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C13H18O9 |
| Molecular Weight | 318.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
Related Azacitidine Standards
- Azacitidine Impurity 31 (CAS 339091-26-8)
- Azacitidine Impurity 33 (CAS CATO-C4X-138833)
- Azacitidine Impurity 46 (CAS CATO-C4X-138846)
- Azacitidine Impurity 7 (CAS 1415316-72-1)
- Azacitidine Impurity 79 (CAS CATO-C4X-138879)
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Recommended Standards
- Levosimendan Impurity 53 (CAS CATO-C4X-130853)
- Nifendipine Impurity 7 (CAS 74378-10-2)
- Benidipine Impurity 7 (CAS 74936-81-5)
- Ribavirin Impurity 50 (CAS 13035-61-5)
- Trazodone Hydrochloride EP Impurity K (CAS 62337-66-0（free base）)
- Apremilast Impurity 54 (CAS CATO-C4X-100954)
- Bifendate Impurity 8 (CAS CATO-C4X-25558)
- 1-(Pyridin-4-ylmethyl)piperidine-2-carboxylic acid (CAS 1024612-64-3)
- 3-(3-(Pyridin-2-ylmethyl)-1H-imidazol-3-ium-1-yl)propane-1-sulfonate (CAS 1374404-06-4)
- 2-(Aminomethyl)-6-cyano-5-(difluoromethyl)-3-iodopyridine (CAS 1805285-88-4)
- N1-(2,3-Dimethylphenyl)-N2-(2-(furan-3-yl)ethyl)oxalamide (CAS 1448134-22-2)
- 5-(4-Fluorophenyl)-2,3,5,6-tetrahydroimidazo[2,1-a]isoquinolin-5-ol (CAS 56882-41-8)
- 2,2,4-trimethylazetidine hydrochloride (CAS 1197627-45-4)
- endo-Ser39-Tirzepatide (CAS CATO-CPTD788935)
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