Atorvastatin Impurity 136 Pivalic Acid CAS 1363159-14-1
| CAS No. | 1363159-14-1 |
| Molecular Formula | C13H25NO4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Atorvastatin Impurity 136 Pivalic Acid (CAS 1363159-14-1) is a certified pharmaceutical impurity reference standard with the molecular formula C13H25NO4C5H10O2 and a molecular weight of 361.48 g/mol.
Based on its molecular formula C13H25NO4C5H10O2, Atorvastatin Impurity 136 Pivalic Acid contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 361.48 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C13H25NO4 C5H10O2 |
| Molecular Weight | 361.48 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
Related Atorvastatin Standards
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- Atorvastatin Lactam calcium Salt Impurity (CAS 1046118-41-5)
- Atorvastatin Impurity 86 (CAS 1046118-44-8)
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- Atorvastatin Impurity 76 (CAS 1099474-28-8)
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Recommended Standards
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- 2-(Tert-butoxycarbonyl)-6,7-diethoxy-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid (CAS 1214645-14-3)
- Lithium chromate, min. 95% (CAS 14307-35-8)
- Semaglutide Impurity 145 (CAS CATO-C4X-2226145)
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