Piribedil Impurity 5 CAS CATO-C4X-28137
| CAS No. | CATO-C4X-28137 |
| Molecular Formula | C16H13ClO4 |
| Molecular Weight | 304.73 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Piribedil Impurity 5 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.
CATO supplies Piribedil Impurity 5 (CAS CATO-C4X-28137), a pharmacopoeial impurity reference standard (molecular formula C16H13ClO4, MW 304.73 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C16H13ClO4, Piribedil Impurity 5 contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 304.73 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C16H13ClO4 |
| Molecular Weight | 304.73 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
Related Piribedil Standards
Recommended Standards
- Tranexamic Impurity 22 (CAS 861518-79-8)
- (2E)-3-(2-Chloro-6-fluorophenyl)-1-(4-ethoxyphenyl)prop-2-en-1-one (CAS 1354941-19-7)
- 4-(Chloromethyl)-N-(4-methyl-3-nitrophenyl)benzamide 851319-32-9 N-(4-Methyl-3-nitrophenyl)-4-chloromethylbenzamide (CAS 851319-32-9)
- 2-(2-Chloro-6-fluorobenzyl)-1-phenylbutane-1,3-dione (CAS 477845-55-9)
- Ezetimibe Impurity 62 (CAS 1618657-31-0)
- Sitagliptin Impurity 9 (CAS 767340-03-4)
- Alogliptin Impurity 93 (CAS CATO-C4X-109993)
- (2s)-1-{[(tert-butoxy)carbonyl]amino}pyrrolidine-2-carboxylic acid (CAS 77821-22-8)
- 1-(1H-Pyrrole-2-carbonyl)piperidine-3-carboxylic acid (CAS 1042602-88-9)
- 42927-57-1 Benzylamine-15N DTXSID40434784 (CAS 42927-57-1)
- 5-Methyl-1,6-naphthyridine (CAS 61542-09-4)
- 3-Phenylbenzo[d]isothiazole 1,1-dioxide (CAS 53440-57-6)
- 1-(cinnamylsulfinyl)-4-methylbenzene (CAS 911820-12-7)
- Semaglutide impurity 56 (CAS CATO-C4X-222656)
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