Atorvastatin Impurity 33(3S,5R) CAS CATO-C4X-113233
| CAS No. | CATO-C4X-113233 |
| Molecular Formula | C33H34CaFN2O5 |
| Molecular Weight | 597.71 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Atorvastatin Impurity 33(3S,5R) under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies Atorvastatin Impurity 33(3S,5R) (CAS CATO-C4X-113233), a pharmacopoeial impurity reference standard (molecular formula C33H34CaFN2O5, MW 597.71 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Atorvastatin Impurity 33(3S,5R) (C33H34CaFN2O5) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. 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. 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.
Physical & Chemical Properties
| Molecular Formula | C33H34CaFN2O5 |
| Molecular Weight | 597.71 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Atorvastatin Standards
- Atorvastatin Impurity 72 (CAS CATO-C4X-113272)
- Atorvastatin Allyl Ester (CAS 915092-85-2)
- Atorvastatin Calcium EP Impurity P (CAS 581772-29-4)
- Atorvastatin Impurity 22 (CAS 1035205-25-4)
- Atorvastatin Cyclic (Fluorophenyl) Impurity (CAS 873950-18-6)
- Atorvastatin Impurity 110 (CAS 887470-43-1)
- Atorvastatin Impurity 129 (CAS 873950-17-5)
- Atorvastatin Impurity 156 (CAS CATO-C4X-1132156)
Recommended Standards
- H-Thr-Lys-Pro-Pro-Arg-OH (H-5045.0025) (CAS 41961-58-4)
- N-(3-(2-(2-(3-(BIotinamino)propoxy)ethoxy)ethoxy)propyl)-3-maleinimidylpropanamide (CAS 525573-22-2)
- Lercanidipine Acid (CAS 855592-30-2)
- Methoxy-Tr-NH-PEG7 (CAS 2353409-88-6)
- Lasmiditan Impurity 42 (CAS CATO-C4X-247842)
- Finerenone Impurity 198 (CAS 1097097-47-6)
- Rosuvastatin Impurity 110 (CAS 160009-36-9)
- Benzoic acid, 4-[bis[(1,1-dimethylethoxy)carbonyl]amino]-2-chloro-, methyl ester (CAS 1196073-25-2)
- (E)-3-(quinolin-4-yl)acrylic acid (CAS 81124-52-9)
- 2-Oxo-2H-chromen-7-yl trifluoromethanesulfonate (CAS 108530-10-5)
- 2-(4-Fluorobenzyl)thiazole-5-carbaldehyde (CAS 1247908-35-5)
- (R)-2-(aminomethyl)pentan-1-ol (CAS 1821818-53-4)
- 4-Amino-5-methyl-1H-pyrazole-3-carbonitrile (CAS 28745-14-4)
- Peptide YY (3-36) (canine, mouse, porcine, rat) trifluoroacetate salt (CAS 126339-09-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com