Testosterone Impurity 65 CAS 570-94-5
| CAS No. | 570-94-5 |
| Molecular Formula | C19H26O3 |
| Molecular Weight | 302.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Testosterone Impurity 65 (C19H26O3) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
CATO supplies Testosterone Impurity 65 (CAS 570-94-5), a pharmacopoeial impurity reference standard (molecular formula C19H26O3, MW 302.41 g/mol) used for the identification and quantification of trace impurities in APIs.
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 65 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 | C19H26O3 |
| Molecular Weight | 302.41 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Testosterone Standards
- Testosterone Impurity N16 (CAS 24704-84-5)
- Testosterone Impurity 54 (CAS CATO-C4X-243254)
- Testosterone Impurity 66 (CAS 95369-50-9)
- Testosterone Impurity 18 (CAS 1311972-89-0)
- Testosterone Impurity 19 (CAS CATO-C4X-132619)
- Testosterone Impurity 20 (CAS CATO-C4X-132620)
- Testosterone EP Impurity J (CAS 57144-06-6)
- Testosterone Impurity 10 (CAS 18841-73-1)
Recommended Standards
- Doxapram Impurity 19 (CAS 14563-97-4)
- 19-Hydroxy-4-androstene-3,17-dione (CAS 510-64-5)
- Exemestane Impurity 31 (CAS 26991-58-2)
- 2-Methoxyestradiol (CAS 362-07-2)
- Policresulen Impurity 17 (CAS 4198-72-5)
- Drotaverin Impurity 54 (CAS CATO-C4X-243554)
- Cetirizine Impurity 11 HCl (Mixture of alpha and beta Isomers) (CAS CATO-C4X-158211)
- Methyl 2-cyano-5-methoxy-4-methylbenzoate (CAS 1138220-75-3)
- 5-Benzyl-4-oxo-5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a][1,4]diazepine-2-carboxylic acid (CAS 1284992-86-4)
- 1-(tert-Butoxy)-2-chlorobenzene (CAS 81634-60-8)
- (R)-tert-Butyl 3-(4-nitrophenoxy)pyrrolidine-1-carboxylate (CAS 1233860-29-1)
- n-(Sec-butyl)-4-methoxy-2-methylaniline (CAS 1339466-89-5)
- 3-nitro-4-sulfamoylbenzoic acid (CAS 89795-76-6)
- Acetyl tetrapeptide-3 (CAS 827306-88-7)
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