Proparacaine Impurity 16 CAS 15788-85-9
| CAS No. | 15788-85-9 |
| Molecular Formula | C16H25NO3 |
| Molecular Weight | 279.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Proparacaine Impurity 16 (CAS 15788-85-9) is a certified pharmaceutical impurity reference standard with the molecular formula C16H25NO3 and a molecular weight of 279.37 g/mol.
Based on its molecular formula C16H25NO3, Proparacaine Impurity 16 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 279.37 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Proparacaine Impurity 16 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 | C16H25NO3 |
| Molecular Weight | 279.37 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
Related Proparacaine Standards
- Proparacaine Impurity 13 (CAS CATO-C4X-202713)
- Proparacaine Impurity 28 (CAS 78329-81-4)
- Proparacaine Impurity 33 (CAS 754936-74-8)
- Proparacaine Impurity 15 (CAS 2102411-30-1)
- Proparacaine Impurity 24 (CAS 2815508-81-5)
- Proparacaine Impurity 29 (CAS CATO-C4X-202729)
- Proparacaine (CAS 499-67-2)
- Proparacaine Impurity 27 (CAS CATO-C4X-202727)
Recommended Standards
- Bilastine Impurity 55 (CAS CATO-C4X-225355)
- Brivaracetam Impurity 215 (CAS CATO-C4X-2007215)
- Mebeverine Acid (CAS 475203-77-1)
- Brivaracetam Impurity 147 (CAS CATO-C4X-2007147)
- Amoxicillin Impurity 38 (CAS CATO-C4X-114838)
- Sodium Fusidate EP Impurity O Sodium Salt (CAS 55601-53-1)
- Perampanel Impurity N1 (CAS 2377611-18-0)
- 6-Chloro-7-fluoro-4-hydroxyquinoline-3-carboxylic acid (CAS 1065093-55-1)
- 2,7-Bis(benzyloxy)naphthalene (CAS 93245-52-4)
- 3,5-Dibromo-2-methoxybenzoic acid (CAS 13130-23-9)
- Methyl 4-chloro-3-hydroxy-5-nitrobenzoate (CAS 180031-12-3)
- 3-Cyano-1,2,4-triazole (CAS 3641-10-9)
- 4-Bromoisoquinolin-6-amine (CAS 2013582-86-8)
- Exenatide (CAS 141758-74-9（free base）)
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