Atorvastatin Impurity 56 CAS 2088732-01-6
| CAS No. | 2088732-01-6 |
| Molecular Formula | C14H27NO4 |
| Molecular Weight | 273.37 g/mol |
| 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.
CATO supplies Atorvastatin Impurity 56 (CAS 2088732-01-6), a pharmacopoeial impurity reference standard (molecular formula C14H27NO4, MW 273.37 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Atorvastatin Impurity 56 (C14H27NO4) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C14H27NO4 |
| Molecular Weight | 273.37 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 1 |
Related Atorvastatin Standards
- Atorvastatin Impurity 37 (CAS 947586-93-8)
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- Atorvastatin Impurity 83 (CAS 125995-13-3)
- Atorvastatin Impurity 140 (CAS CATO-C4X-1132140)
- Atorvastatin Impurity 87 (CAS 1357600-18-0)
- Atorvastatin Acetonide t-Butyl Ester Side Chain (4R,6R)-Isomer (CAS 125971-94-0)
- Atorvastatin Impurity 55 (CAS 196085-84-4)
- Atorvastatin Impurity 63 (CAS 196085-85-5)
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Why CATO?
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