Cetirizine impurity 38 CAS CATO-C4X-158238
| CAS No. | CATO-C4X-158238 |
| Molecular Formula | C32H32Cl2N2O |
| Molecular Weight | 531.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Cetirizine impurity 38 (CAS CATO-C4X-158238), a pharmacopoeial impurity reference standard (molecular formula C32H32Cl2N2O, MW 531.52 g/mol) used for the identification and quantification of trace impurities in APIs.
Cetirizine impurity 38 (C32H32Cl2N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
CATO manufactures Cetirizine impurity 38 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 | C32H32Cl2N2O |
| Molecular Weight | 531.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Cetirizine Standards
- Cetirizine Impurity 8 (CAS 1384888-64-5)
- Cetirizine Impurity 25 (CAS CATO-C4X-158225)
- Cetirizine Impurity 34 (CAS CATO-C4X-158234)
- Cetirizine EP Impurity D (CAS 346451-15-8)
- Cetirizine Impurity 34 (Mixture of Diastereomers) (CAS 1243652-36-9)
- Cetirizine Impurity 18 (CAS CATO-C4X-158218)
- Cetirizine Impurity 39 (CAS CATO-C4X-108339)
- (S)-Cetirizine Propanediol Ester (CAS CATO-C4X-158212)
Recommended Standards
- 5-((4-Acetamidophenyl)amino)-8-amino-9,10-dioxo-9,10-dihydroanthracene-1,7-disulfonic acid (CAS 93892-19-4)
- Entacapone Impurity 58 (CAS CATO-C4X-162958)
- 4-((4-Acetamidophenyl)amino)-1-amino-9,10-dioxo-9,10-dihydroanthracene-2,6-disulfonic acid (CAS 97549-02-5)
- Carbidopa Impurity 20 (CAS CATO-C4X-231020)
- Midazolam EP Impurity E Maleate Salt (CAS CATO-C4X-150922)
- Fenbufen impurity 7 (CAS CATO-C4X-19397)
- Tenofovir alafenamide Impurity 98 (CAS CATO-C4X-179798)
- 3-Hydroxy-6,6-dimethyl-1-oxo-1,2,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (CAS 890023-13-9)
- 2-amino-3-cycloheptyl-propanoic acid (CAS 116622-74-3)
- 2-Chloro-4-hydroxybenzoic Acid (CAS 56363-84-9)
- (4-Bromo-2-chloro-5-fluorophenyl)methanamine hydrochloride (CAS 1338254-23-1)
- 3-Methylpyridine-2-boronic acid, monolithium salt (CAS 1256345-65-9)
- 1-(3-chlorophenyl)-1H-pyrazole-3-carboxylic acid (CAS 1152534-59-2)
- Tirzepatide Impurity 58 (CAS CATO-C4X-324058)
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