Promestriene Impurity 8 CAS CATO-C4X-22058
| CAS No. | CATO-C4X-22058 |
| Molecular Formula | C22H32O2 |
| Molecular Weight | 328.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Promestriene Impurity 8 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.
Promestriene Impurity 8 (CAS CATO-C4X-22058) is a certified pharmaceutical impurity reference standard with the molecular formula C22H32O2 and a molecular weight of 328.49 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, Promestriene Impurity 8 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 328.49 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C22H32O2 |
| Molecular Weight | 328.49 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Promestriene Standards
- Promestriene Impurity 15 (CAS CATO-C4X-220515)
- Promestriene (CAS 39219-28-8)
- Promestriene Impurity 9 (CAS 2575516-67-3)
- Promestriene Impurity 3 (CAS 22034-63-5)
- Promestriene Impurity 6 (CAS CATO-C4X-22056)
- Promestriene Impurity 12 (CAS CATO-C4X-220512)
- Promestriene Impurity 7 (CAS 1852-86-4)
- Promestriene Impurity 14 (CAS CATO-C4X-220514)
Recommended Standards
- ethyl (2Z,5Z,8Z,11Z,14Z,17Z)-icosa-2,5,8,11,14,17-hexaenoate (CAS CATO-C4X-289019)
- Prostene diastereomers (CAS CATO-C4X-220510)
- Ethyl (3Z,6Z,9Z,12Z,15Z,18Z)-icosa-3,6,9,12,15,18-hexaenoate (CAS CATO-C4X-289023)
- Vitamin A Impurity 19 (CAS 29443-87-6)
- Venlafaxine Impurity 43 (CAS CATO-C4X-143443)
- Lifitegrast Impurity 35 (CAS 2295862-29-0)
- Ampicillin Trihydrate EP Impurity N (CAS CATO-C4X-144353)
- 4-Butoxy-3-nitrobenzoic acid (CAS 4906-28-9)
- 1-(4h-1,2,4-Triazol-3-yl)ethan-1-ol (CAS 1500489-89-3)
- Cyclohepta[c]pyrazole (CAS 275-70-7)
- 4,7-Bis(5-bromo-4-hexylthiophen-2-yl)benzo[c][1,2,5]oxadiazole (CAS 1256447-83-2)
- 7-[(E)-2-[3-(4-tert-Butylphenoxy)phenyl]ethenyl]-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 685108-17-2)
- 2-Ethoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazine (CAS 1186041-95-1)
- Insulin B (22-25) (CAS 34367-73-2)
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