Testosterone Impurity 42 CAS CATO-C4X-243242
| CAS No. | CATO-C4X-243242 |
| Molecular Formula | C27H38O3 |
| Molecular Weight | 410.59 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
CATO supplies Testosterone Impurity 42 (CAS CATO-C4X-243242), a pharmacopoeial impurity reference standard (molecular formula C27H38O3, MW 410.59 g/mol) used for the identification and quantification of trace impurities in APIs.
Testosterone Impurity 42 (C27H38O3) contains a steroid core, a hydroxyl group, an ether linkage. 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 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.
Physical & Chemical Properties
| Molecular Formula | C27H38O3 |
| Molecular Weight | 410.59 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Testosterone Standards
- Testosterone Impurity 24 (CAS 122651-11-0)
- Testosterone Impurity 31 (CAS CATO-C4X-243231)
- Testosterone Impurity 41 (CAS CATO-C4X-243241)
- Testosterone Cypionate (CAS 58-20-8)
- Testosterone Impurity 30 (CAS CATO-C4X-243230)
- Testosterone phenylacetate (CAS 5704-03-0)
- Testosterone Decanoate EP Impurity B (CAS 29430-22-6)
- Testosterone Impurity 44 (CAS CATO-C4X-243244)
Recommended Standards
- Boldenone Cypionate (CAS 106505-90-2)
- (2R,3S,5R)-5-(2-Amino-4-chloro-5-iodo-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-2-(hydroxymethyl)tetrahydrofuran-3-ol (CAS 1200461-78-4)
- Estradiol Impurity 46 (CAS CATO-C4X-163646)
- N-(4-((1,4,8,11-Tetraazacyclotetradecan-1-yl)methyl)benzyl)-1-(pyridin-2-yl)methanamine (CAS 185991-24-6)
- Dexamethasone Impurity 19 (CAS CATO-C4X-116519)
- Relebactam Impurity 42 (CAS CATO-C4X-214442)
- Naproxen Impurity 52 (CAS CATO-C4X-170852)
- Tris(2-methoxyphenyl)bismuth dichloride (CAS 121899-81-8)
- 2-ethoxy-3-(trifluoromethyl)pyridine (CAS 849934-82-3)
- (R)-1-((Trifluoromethyl)sulfonyl)piperidin-3-amine (CAS 2166256-07-9)
- 1-(4,5-Dimethoxy-2-nitrophenyl)propan-2-one (CAS 115247-49-9)
- 2-(Methoxymethoxy)-4-(methylthio)butanenitrile (CAS 476301-91-4)
- rel-(1S,3R)-3-Phenylcyclohexan-1-ol (CAS 22147-17-7)
- Biotinyl-CBP501 Affinity Peptide trifluoroacetate salt (CAS 2022956-39-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com