Naphazoline EP Impurity A HCl CAS 73664-32-1
| CAS No. | 73664-32-1 |
| Molecular Formula | C14H16N2O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Naphazoline EP Impurity A HCl (CAS 73664-32-1), a pharmacopoeial impurity reference standard (molecular formula C14H16N2OHCl, MW 264.75 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C14H16N2OHCl, Naphazoline EP Impurity A HCl contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 264.75 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 Naphazoline EP Impurity A HCl 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 | C14H16N2O HCl |
| Molecular Weight | 264.75 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Naphazoline Standards
- Naphazoline Impurity 2 (CAS 1019-21-2)
- Naphazoline EP Impurity C (CAS 132-75-2)
- Naphazoline Impurity 1 (CAS 17518-47-7)
- Naphazoline EP Impurity D (CAS 22126-67-6)
- Naphazoline EP Impurity A (CAS 36321-43-4)
- Naphazoline Impurity 6 (CAS 36660-46-5)
- Naphazoline Nitrate (CAS 5144-52-5)
- Naphazoline hydrochloride (CAS 550-99-2)
Recommended Standards
- Cladribine Impurity N77 (CAS 152463-97-3)
- Ezetimibe Impurity 56 (CAS 371-40-4)
- Ixazomib Impurity 43 (CAS CATO-C4X-126743)
- 2-Trifluoromethylpyrrolidine-1-sulfonyl chloride (CAS 1389314-96-8)
- H-Leu-Ala-βNA (CAS 72534-98-6)
- (3S)-3-(difluoromethoxy)pyrrolidine hydrochloride (CAS 1638744-72-5)
- Desethyl hydroxychloroquine-d (CAS 1216461-57-2)
- 3-Methyl-5,6-dihydrothieno[2,3-d]pyrimidine-2,4(1H,3H)-dione (CAS 21004-30-8)
- 4-(Difluoromethyl)-3-fluoro-6-(trifluoromethoxy)picolinic acid (CAS 1804810-77-2)
- Semaglutide impurity 32 (CAS CATO-C4X-222632)
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