Progesterone Impurity 78 CAS CATO-C4X-150278
| CAS No. | CATO-C4X-150278 |
| Molecular Formula | C21H28O3 |
| Molecular Weight | 328.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 328.45 g/mol gives Progesterone Impurity 78 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Progesterone Impurity 78 (CAS CATO-C4X-150278), a pharmacopoeial impurity reference standard (molecular formula C21H28O3, MW 328.45 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Progesterone Impurity 78 (C21H28O3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 328.45 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
CATO manufactures Progesterone Impurity 78 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 | C21H28O3 |
| Molecular Weight | 328.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | ≥95% |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Progesterone Standards
- Progesterone Impurity 1 (CAS 37717-13-8)
- Progesterone Impurity 17 (CAS 2243-08-5)
- Progesterone Impurity 41 (CAS 2477-60-3)
- Progesterone Impurity 42 (CAS 1173998-80-5)
- (20R)-Progesterone EP Impurity I (CAS 66289-21-2)
- Progesterone Impurity N5 (CAS 35525-27-0)
- Progesterone Impurity N1(Mixture of Diastereomers) (CAS 71658-22-5)
- Progesterone EP Impurity I (S-isomer) (CAS 3986-89-8)
Recommended Standards
- Cyproterone Impurity 4 (CAS 2477-61-4)
- Estradiol Impurity 20 (CAS 2398-63-2)
- Levonorgestrel Impurity 40 (10R) (CAS CATO-C4X-167740)
- Rivastigmine impurity 34 (CAS CATO-C4X-138434)
- Paracetamol EP Impurity E (CAS 99-93-4)
- Bumetanide Impurity 48 (CAS CATO-C4X-198648)
- Venetoclax Impurity 100 (CAS CATO-C4X-2495100)
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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