Tropicamide EP Impurity A CAS 33403-97-3
| CAS No. | 33403-97-3 |
| Molecular Formula | C8H12N2 |
| Molecular Weight | 136.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 136.19 g/mol gives Tropicamide EP Impurity A distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Tropicamide EP Impurity A (CAS 33403-97-3) is a certified pharmaceutical impurity reference standard with the molecular formula C8H12N2 and a molecular weight of 136.19 g/mol.
Structurally, Tropicamide EP Impurity A (C8H12N2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 136.19 g/mol, it falls into the low-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Tropicamide EP Impurity A 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 | C8H12N2 |
| Molecular Weight | 136.19 g/mol |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 2 |
Related Tropicamide Standards
- Tropicamide Impurity 14 (CAS 50550-65-7)
- Tropicamide Impurity 15 (CAS CATO-C4X-215015)
- Tropicamide Impurity 21 (CAS 96392-48-2)
- Tropicamide Impurity 13 (CAS CATO-C4X-215013)
- Tropicamide Impurity 17 (CAS CATO-C4X-215017)
- Tropicamide Impurity 11 (CAS 101112-51-0)
- Tropicamide EP Impurity B (CAS 57322-50-6)
- Tropicamide Impurity 12 (CAS CATO-C4X-215012)
Recommended Standards
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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