Atorvastatin Cyclic Sodium Salt (Isopropyl) Impurity CAS CATO-CP150633
| CAS No. | CATO-CP150633 |
| Molecular Formula | C33H35N2O7 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Atorvastatin Cyclic Sodium Salt (Isopropyl) Impurity meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Atorvastatin Cyclic Sodium Salt (Isopropyl) Impurity (CAS CATO-CP150633), a pharmacopoeial impurity reference standard (molecular formula C33H35N2O7Na, MW 594.64 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Atorvastatin Cyclic Sodium Salt (Isopropyl) Impurity (C33H35N2O7Na) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 17.5, corresponding to approximately 17 ring(s) or double-bond equivalent(s). With a molecular weight of 594.64 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C33H35N2O7 Na |
| Molecular Weight | 594.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 17.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Atorvastatin Standards
- Atorvastatin Impurity 22 (CAS 1035205-25-4)
- Atorvastatin Calcium Propylene Glycol Solvate (CAS 1040350-07-9)
- Atorvastatin Lactone Diepoxide (CAS 1046118-40-4)
- Atorvastatin Lactam calcium Salt Impurity (CAS 1046118-41-5)
- Atorvastatin Impurity 86 (CAS 1046118-44-8)
- Atorvastatin Impurity 141 Calcium Salt (CAS 1046378-58-8)
- Atorvastatin Impurity 76 (CAS 1099474-28-8)
- Atorvastatin EP Impurity F(Calcium Salt) (CAS 1105067-87-5)
Recommended Standards
- Imidacloprid impurity 5 (CAS CATO-C4X-25415)
- Anastrozole Impurity 28 (CAS CATO-C4X-123928)
- Tulobuterol Impurity N4 (CAS 117538-45-1)
- 5-Bromo-2-phenylpyridazin-3(2h)-one (CAS 78636-45-0)
- 3-Acetyl-6-chloroimidazo[1,2-b]pyridazine (CAS 90734-71-7)
- 3-Fluoro-2,4-dimethylphenol (CAS 1008452-68-3)
- (4-((2,6-Difluorobenzyl)oxy)phenyl)boronic acid (CAS 2246544-61-4)
- 3-Chloro-6,7-dihydro-5H-pyrrolo[3,4-b]pyridin-5-one (CAS 1256806-34-4)
- Methyl 3-cyclobutoxy-2-(methylamino)propanoate hydrochloride (CAS 1485749-12-9)
- Des-Pro-Pro-Tirzepatide (CAS CATO-CPTD788696)
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