Cinepazide Impurity 12 CAS 10263-19-1
| CAS No. | 10263-19-1 |
| Molecular Formula | C12H13ClO4 |
| Molecular Weight | 256.68 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.
Cinepazide Impurity 12 (CAS 10263-19-1) is a certified pharmaceutical impurity reference standard with the molecular formula C12H13ClO4 and a molecular weight of 256.68 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Cinepazide Impurity 12 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 256.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C12H13ClO4 |
| Molecular Weight | 256.68 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Cl-containing |
Related Cinepazide Standards
- Cinepazide Impurity 6 (CAS 20329-98-0)
- Cinepazide Impurity 10 (CAS 53792-97-5)
- Cinepazide Impurity 3 (CAS CATO-C4X-18153)
- Cinepazide Impurity 8 (CAS 39890-45-4)
- Cinepazide Impurity 5 (CAS 1078-64-4)
- Cinepazide Impurity 7 (CAS 20266-01-7)
- Cinepazide Impurity 13 (CAS 88133-87-3)
- Cinepazide Impurity 4 (CAS 54063-23-9)
Recommended Standards
- Azelastine impurity 61 (CAS CATO-C4X-139661)
- Lornoxicam Impurity 44 (CAS 1030422-51-5)
- Azelastine EP Impurity E (CAS 20526-97-0)
- Lornoxicam impurity 66 (CAS CATO-C4X-201666)
- Bumetanide Impurity 131 (CAS CATO-C4X-1986131)
- Peficitinib Impurity 13 (CAS 944118-04-1)
- Empagliflozin impurity 191 (CAS CATO-C4X-1065191)
- Ethyl 2-(Hydroxymethyl)oxazole-4-acetate (CAS 1215214-71-3)
- 2-Methyl-2,6-diazaspiro[3.3]heptane hemioxalate (CAS 1527515-02-1)
- 3-bromoimidazo[1,2-a]pyridine-8-carbaldehyde (CAS 1033434-54-6)
- 4-Fluoro-1-(methoxymethoxy)-2-methylbenzene (CAS 1555811-84-1)
- 1,2-Dichloro-4-(4-iodophenoxy)benzene (CAS 167990-11-6)
- Methyl (E)-3-(2-(dimethylamino)vinyl)-4-nitrobenzoate (CAS 108763-41-3)
- Semaglutide Impurity 142 (CAS CATO-C4X-2226142)
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