Testosterone Impurity 28 CAS CATO-C4X-132628
| CAS No. | CATO-C4X-132628 |
| Molecular Formula | C33H46O4 |
| Molecular Weight | 506.72 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 506.72 g/mol gives Testosterone Impurity 28 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Testosterone Impurity 28 (CAS CATO-C4X-132628), a pharmacopoeial impurity reference standard (molecular formula C33H46O4, MW 506.72 g/mol) used for the identification and quantification of trace impurities in APIs.
Testosterone Impurity 28 (C33H46O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Testosterone Impurity 28 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 | C33H46O4 |
| Molecular Weight | 506.72 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Testosterone Standards
- Testosterone Impurity 27 (CAS CATO-C4X-132627)
- Testosterone Impurity 29 (CAS CATO-C4X-132629)
- Testosterone Impurity 24 (CAS CATO-C4X-132624)
- Testosterone Impurity 25 (CAS CATO-C4X-132625)
- Testosterone Impurity 26 (CAS CATO-C4X-132626)
- Testosterone Impurity N9 (CAS 162890-98-4)
- Testosterone Impurity 30 (CAS CATO-C4X-132630)
- Testosterone Impurity 31 (CAS CATO-C4X-132631)
Recommended Standards
- Anadur (CAS 52279-57-9)
- Bis(4-benzyl-5-(butylthio)-4H-1,2,4-triazol-3-yl)methane (CAS 62662-60-6)
- 4-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]methyl}phenyl 4-bromobenzene-1-sulfonate (CAS 338416-31-2)
- Bis(5-(butylthio)-4-(m-tolyl)-4H-1,2,4-triazol-3-yl)methane (CAS 62635-68-1)
- Podophyllotoxin impurity 4 (CAS 138456-91-4)
- Carteolol Impurity 38 (CAS CATO-C4X-228738)
- Berberine Impurity 31 (CAS 17388-19-1)
- [4-(3,5-dimethyl-1h-pyrazol-1-yl)phenyl]methanamine dihydrochloride (CAS 1184995-77-4)
- Promurit (CAS 5836-73-7)
- Ethyl 3-(4-bromo-3,5-dimethylphenoxy)propanoate (CAS 1443348-09-1)
- (S)-1-(3-Chloro-4-methylphenyl)-2,2,2-trifluoroethanamine (CAS 1213534-65-6)
- Sodium tripolyphosphate,99% (CAS 7758-29-4)
- 3-Ethyl-1,2-dimethyl-1H-imidazol-3-ium 4-methylbenzenesulfonate (CAS 783321-71-1)
- Semaglutide Impurity 129 (CAS 2490269-79-7)
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