rac Cetirizine N-Oxide (Mixture of Diastereomers) CAS 1076199-80-8
| CAS No. | 1076199-80-8 |
| Molecular Formula | C21H25ClN2O4 |
| Molecular Weight | 404.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), rac Cetirizine N-Oxide (Mixture of Diastereomers) meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
rac Cetirizine N-Oxide (Mixture of Diastereomers) (CAS 1076199-80-8) is a high-purity analytical reference standard with the molecular formula C21H25ClN2O4 and a molecular weight of 404.89 g/mol.
Structurally, rac Cetirizine N-Oxide (Mixture of Diastereomers) (C21H25ClN2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 404.89 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H25ClN2O4 |
| Molecular Weight | 404.89 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related rac Standards
- Cetirizine Impurity 15 (CAS CATO-C4X-158215)
- Cetirizine-d8 (CAS 774596-22-4)
- rac Cetirizine-d8 N-Oxide (CAS 1216444-13-1)
- (±)-Cetirizine-d4 (ethoxy-d4) (CAS 1219803-84-5)
- Cetirizine Impurity 29 (CAS 62084-35-9)
- Cetirizine EP Impurity C (CAS 83881-59-8)
- Cetirizine Impurity 30 (CAS CATO-C4X-158230)
- Cetirizine (CAS 83881-51-0)
Recommended Standards
- N-(3-Chloro-4-fluorophenyl)-4-hydroxy-1-methyl-1H-thieno[3,2-c][1,2]thiazine-3-carbothioamide 2,2-dioxide (CAS 320423-78-7)
- Levocetirizine Impurity 44 (CAS 442863-80-1)
- 4-[(2E)-3-(Thiophen-2-yl)prop-2-enoyl]phenyl 4-chlorobenzene-1-sulfonate (CAS 331460-91-4)
- Levocetirizine Impurity 70 (CAS CATO-C4X-108370)
- 1-Cyclopropyl-1h-imidazo[4,5-c]pyridin-2(3h)-one hydrochloride (CAS 797032-01-0)
- 3,7-Dimethyluric acid (CAS 13087-49-5)
- 1,3-Dichloro-2-(chloromethyl)-4-methylbenzene (CAS 1379325-36-6)
- 2-Ethyl-4-(((2-methylthiazol-4-yl)methyl)thio)-6,7-dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidine (CAS 690643-70-0)
- Atorvastatin Impurity 86 (CAS 1046118-44-8)
- 3-(5-Fluoro-2-nitrophenyl)pyridine (CAS 1214356-50-9)
- Methyl 2-(6-cyanobenzo[d][1,3]dioxol-5-yl)acetate (CAS 184042-03-3)
- 2,4-Dichloro-5-iodo-7-tosyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 1116240-01-7)
- (R)-2-(Tetrahydrofuran-2-yl)ethan-1-ol (CAS 71884-84-9)
- Anxiety Peptide (CAS 95237-86-8)
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