Chlormadinone Acetate EP Impurity K CAS 425-51-4
| CAS No. | 425-51-4 |
| Molecular Formula | C23H30O4 |
| Molecular Weight | 370.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Chlormadinone Acetate EP Impurity K (CAS 425-51-4), a pharmacopoeial impurity reference standard (molecular formula C23H30O4, MW 370.48 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Chlormadinone Acetate EP Impurity K (C23H30O4) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 370.48 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.
CATO manufactures Chlormadinone Acetate EP Impurity K 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.
Physical & Chemical Properties
| Molecular Formula | C23H30O4 |
| Molecular Weight | 370.48 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Chlormadinone Standards
- Chlormadinone (CAS 1961-77-9)
- Chlormadinone Acetate EP Impurity H (CAS 1054-64-4)
- Chlormadinone Acetate EP Impurity F (CAS 1172-82-3)
- Chlormadinone Acetate (CAS 302-22-7)
- Chlormadinone Acetate EP Impurity L (CAS 2658-74-4)
- Chlormadinone Acetate EP Impurity I (CAS 4809-88-5)
- Chlormadinone Acetate EP Impurity I (CAS 4203-01-4)
- Chlormadinone Acetate EP Impurity E (CAS 15251-04-4)
Recommended Standards
- 6,15-Diketo-13,14-dihydro-PGF1α (CAS 63983-53-9)
- 6-Keto-Prostaglandin F1-Alfa (CAS 58962-34-8)
- 4-(1,3-Dithian-2-yl)phenyl 4-fluorobenzene-1-sulfonate (CAS 329777-73-3)
- Bis((tetrahydrofuran-2-yl)methyl) decanedioate (CAS 4650-79-7)
- Cefodizime Impurity 2 (CAS CATO-C4X-18062)
- Cefotaxime Impurity 78 (CAS CATO-C4X-120178)
- Azithromycin Impurity 25 (CAS CATO-C4X-100325)
- Ethyl 2,4,5-trichlorobenzoate (CAS 86569-86-0)
- 2-(Furan-3-yl)-1,3-thiazole-4-carboxylic acid (CAS 955400-59-6)
- 2-Methyl-2H-indazole-6-carbaldehyde (CAS 1337881-08-9)
- N-(3-amino-4-fluorophenyl)tetrahydro-2H-pyran-4-carboxamide (CAS 1219949-45-7)
- N-(3-chloro-2-methylphenyl)-4-fluorobenzamide (CAS 331270-53-2)
- 2-Chloro-1,3-difluoro-5-(trifluoromethyl)benzene (CAS 1261846-28-9)
- Semaglutide impurity 77 (CAS CATO-C4X-222677)
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