Cetirizine Impurity 22 CAS 13391-38-3
| CAS No. | 13391-38-3 |
| Molecular Formula | C13H10BrCl |
| Molecular Weight | 281.58 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.
Cetirizine Impurity 22 (CAS 13391-38-3) is a certified pharmaceutical impurity reference standard with the molecular formula C13H10BrCl and a molecular weight of 281.58 g/mol.
Structurally, Cetirizine Impurity 22 (C13H10BrCl) contains chlorine/bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 281.58 g/mol, it falls into the medium-molecular-weight range. 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).
CATO manufactures Cetirizine Impurity 22 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H10BrCl |
| Molecular Weight | 281.58 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | Cl/Br-containing |
Related Cetirizine Standards
- Cetirizine impurity N1 (CAS 58023-19-1)
- Cetirizine EP Impurity A (CAS 303-26-4)
- Cetirizine Impurity Y (CAS 34605-45-3)
- Cetirizine Impurity 35 (CAS CATO-C4X-158235)
- Cetirizine Impurity 36 (CAS CATO-C4X-158236)
- Cetirizine Impurity C18 (CAS 13391-39-4)
- Cetirizine EP Impurity G (CAS 109806-71-5)
- Cetirizine Impurity 26 (CAS CATO-C4X-158226)
Recommended Standards
- 1-(Bromophenylmethyl)-4-chlorobenzene (CAS 948-54-9)
- 3-Chloro-4-(N,N-dimethylamino)phenylboronic acid pinacol ester (CAS 1613259-65-6)
- Benzo[c][1,2,5]selenadiazole-4-sulfonyl chloride (CAS 959578-50-8)
- 2-Chloro-6-isopropylpyridine-3-boronic acid pinacol ester (CAS 1689528-51-5)
- Oseltamivir Impurity 117 (CAS 2413185-90-5)
- Oseltamivir Impurity 81 (CAS CATO-C4X-172081)
- Lumateperone Impurity 73 (CAS CATO-C4X-220173)
- 5-(Bromomethyl)-4-methyloxazole (CAS 720655-70-9)
- (2S)-1-Methyl-5-(5-oxohexyl)pyrrolidine-2-carboxylic acid (CAS 778524-15-5)
- tert-Butyl 2-(pyridin-3-yl)piperazine-1-carboxylate (CAS 886771-08-0)
- N-Phenylthiophen-2-amine (CAS 940-32-9)
- 4-(3,5-dichlorophenoxy)benzonitrile (CAS 1153351-34-8)
- 1-(Difluoromethoxy)-2-fluoro-4-iodobenzene (CAS 1261500-62-2)
- Biotinyl-Neuropeptide Y (human, rat) trifluoroacetate salt (CAS 213779-13-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com