Cetirizine impurity 31 CAS CATO-C4X-158231
| CAS No. | CATO-C4X-158231 |
| Molecular Formula | C23H27ClN2O5 |
| Molecular Weight | 446.92 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Cetirizine impurity 31.
CATO supplies Cetirizine impurity 31 (CAS CATO-C4X-158231), a pharmacopoeial impurity reference standard (molecular formula C23H27ClN2O5, MW 446.92 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Cetirizine impurity 31 (C23H27ClN2O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 446.92 g/mol, it falls into the moderately-high-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).
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 31 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 | C23H27ClN2O5 |
| Molecular Weight | 446.92 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Cetirizine Standards
- Cetirizine Impurity 16 (CAS CATO-C4X-158216)
- Cetirizine Impurity 39 (CAS CATO-C4X-108339)
- (S)-Cetirizine Propanediol Ester (CAS CATO-C4X-158212)
- Cetirizine Impurity 17 (CAS CATO-C4X-158217)
- Cetirizine EP Impurity E (CAS 682323-77-9)
- Cetirizine Dihydrochloride EP Impurity E (CAS CATO-C4X-108351)
- Cetirizine Impurity 34 (Mixture of Diastereomers) (CAS 1243652-36-9)
- Cetirizine Impurity 18 (CAS CATO-C4X-158218)
Recommended Standards
- 1,4-Diamino-2-chloro-3-(4-cyclohexylphenoxy)anthracene-9,10-dione (CAS 89868-53-1)
- Fenofibrate EP Impurity G (CAS 217636-48-1)
- 3-Hexadecyl-1,1,1,3,5,5,5-heptamethyltrisiloxane (CAS 286938-67-8)
- 4,6-Dibromo-2-(4-bromophenyl)benzo[d]oxazol-5-amine (CAS 577768-91-3)
- Pentoxyverine Impurity 22 (CAS 13877-99-1)
- N-Nitroso Sildenafil EP Impurity F (CAS CATO-C4X-112883)
- Atorvastatin Impurity 124 (CAS 666714-64-3)
- 4-((4-Oxocyclohexa-2,5-dien-1-ylidene)amino)isoxazolidin-3-one (CAS 105831-95-6)
- 2-(1,2,2,2-Tetrafluoroethyl)quinazolin-4(1H)-one (CAS 63099-85-4)
- 1-(p-Tolyl)-1H-pyrazol-4-ol (CAS 77458-34-5)
- 2-(3-Fluoro-4-methoxyphenyl)-2-methyloxirane (CAS 1189785-35-0)
- N'-(diphenylmethylene)-2-(phenylthio)acetohydrazide (CAS 341967-99-5)
- 6-Amino-1-methyl-1,2,3,4-tetrahydroquinolin-2-one (CAS 233775-30-9)
- Pancreatic Polypeptide (31-36) Free Acid, human (CAS 192432-73-8)
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