Atorvastatin EP Impurity G(Calcium Salt) CAS 887196-29-4
| CAS No. | 887196-29-4 |
| Molecular Formula | 2*C34H36FN2O5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Atorvastatin EP Impurity G(Calcium Salt) is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Atorvastatin EP Impurity G(Calcium Salt) (CAS 887196-29-4) is a certified pharmaceutical impurity reference standard with the molecular formula C34H36FN2O5Ca and a molecular weight of 611.75 g/mol.
Based on its molecular formula C34H36FN2O5Ca, Atorvastatin EP Impurity G(Calcium Salt) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 611.75 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Atorvastatin EP Impurity G(Calcium Salt) 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.
Physical & Chemical Properties
| Molecular Formula | 2*C34H36FN2O5 Ca |
| Molecular Weight | 611.75 g/mol |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 17.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| 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
- Nafamostat impurity 102 (CAS CATO-C4X-1332102)
- Naltrexone impurity 49 (CAS CATO-C4X-147549)
- Cefamandole Impurity 14 (CAS CATO-C4X-122114)
- 1-(10H-Phenothiazin-10-yl)-2-phenylethan-1-one (CAS 54012-72-5)
- Methyl 4-amino-2-oxabicyclo[2.2.2]Octane-1-carboxylate (CAS 2320469-52-9)
- 2-Chloro-9,10-diphenyl-9,10-dihydroacridin-9-ol (CAS 6321-78-4)
- (4-Cyclohexylpiperazin-1-yl)(4-nitrophenyl)methanone (CAS 625411-48-5)
- 4-Methyl-2-propionylcyclohexan-1-one (CAS 5601-49-0)
- N-(3-Acetylphenyl)-2-chloroacetamide (CAS 42865-69-0)
- Liraglutide Impurity 25 (CAS CATO-C4X-199225)
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