Atorvastatin Impurity 44 CAS CATO-C4X-113244
| CAS No. | CATO-C4X-113244 |
| Molecular Formula | 2*C33H32FN2O4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Atorvastatin Impurity 44 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 Impurity 44 (CAS CATO-C4X-113244), a pharmacopoeial impurity reference standard (molecular formula C33H32FN2O4Ca, MW 579.71 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Atorvastatin Impurity 44 (C33H32FN2O4Ca) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 18.5, corresponding to approximately 18 ring(s) or double-bond equivalent(s). With a molecular weight of 579.71 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | 2*C33H32FN2O4 Ca |
| Molecular Weight | 579.71 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 18.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| 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
- Furosemide Impurity 11 (CAS CATO-C4X-140211)
- Tadalafil Impurity 31 (CAS 2058231-08-4)
- Salbutamol impurity 166 (CAS 2919946-71-5)
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- 3-Bromo-6-chloroimidazo[1,2-b]pyridazin-8-amine (CAS 2170373-43-8)
- 3-[2,5-dimethyl-3-(2-methyl-1,3-thiazol-4-yl)-1h-pyrrol-1-yl]propanoic acid (CAS 929975-25-7)
- 3-Ethoxy-5-iodo-4-((4-methylbenzyl)oxy)benzamide (CAS 1023258-44-7)
- 2-Chloro-3-(3-(methoxymethyl)pyrrolidin-1-yl)pyrazine (CAS 1342519-58-7)
- 2-(o-Tolyl)benzo[b]thiophene (CAS 55084-51-0)
- Osteoblast Activating Peptide (mouse, rat) (H-7262.0500) (CAS 1222950-80-2)
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