Drotaverine Impurity 13 CAS 69373-87-1
| CAS No. | 69373-87-1 |
| Molecular Formula | C14H20O4 |
| Molecular Weight | 252.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Drotaverine Impurity 13 (CAS 69373-87-1), a pharmacopoeial impurity reference standard (molecular formula C14H20O4, MW 252.31 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Drotaverine Impurity 13 (C14H20O4) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C14H20O4 |
| Molecular Weight | 252.31 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
Related Drotaverine Standards
- Drotaverine Impurity 12 (CAS 92157-09-0)
- Drotaverine Impurity 19 (CAS CATO-C4X-243519)
- Drotaverine Impurity 1 (CAS 38464-04-9)
- Drotaverine Impurity 15 (CAS 526190-09-0)
- Drotaverine Impurity 18 (CAS 27472-20-4)
- Drotaverine Impurity 14 (CAS 5763-61-1)
- Drotaverine Impurity 17 (CAS 2050-46-6)
- Drotaverine Impurity 16 (CAS 37491-68-2)
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- 3-Hydroxy Benzopyrene (CAS 13345-21-6)
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