Testosterone Impurity 19 CAS CATO-C4X-132619
| CAS No. | CATO-C4X-132619 |
| Molecular Formula | C21H32O |
| Molecular Weight | 300.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Testosterone Impurity 19 (CAS CATO-C4X-132619, C21H32O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a steroid core, a hydroxyl group, an ether linkage, Testosterone Impurity 19 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 300.48 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 Testosterone Impurity 19 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 | C21H32O |
| Molecular Weight | 300.48 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Testosterone Standards
- Testosterone Impurity 18 (CAS 1311972-89-0)
- Testosterone Impurity 20 (CAS CATO-C4X-132620)
- Testosterone EP Impurity J (CAS 57144-06-6)
- Testosterone Impurity 19 (CAS 2243-06-3)
- Testosterone Impurity N16 (CAS 24704-84-5)
- Testosterone Impurity 65 (CAS 570-94-5)
- Testosterone Impurity 54 (CAS CATO-C4X-243254)
- Testosterone Impurity 66 (CAS 95369-50-9)
Recommended Standards
- Cholic Acid Impurity 30 (CAS 1093397-66-0)
- 2-Hydroxyethyl Palmitate (CAS 4219-49-2)
- Abiraterone Impurity 81 (CAS 2118-31-2)
- 2-Hydroxyoctadecanoic Acid (CAS 629-22-1)
- Latanoprost Impurity 27 (CAS CATO-C4X-194127)
- Butylphthalide Impurity 75 (CAS 72917-31-8)
- Dapagliflozin Impurity 20 (CAS 2169998-23-4)
- 4-[(4-Morpholino)methyl]phenylmagnesium bromide, 0.25M THF (CAS 480424-75-7)
- 4-{5-[2-(4-Fluoro-phenoxy)-ethyl]-4-methyl-thiazol-2-yl}-azepan-4-ol hydrochloride (CAS 1361111-41-2)
- n-Methyl-5-phenyl-1,3,4-thiadiazol-2-amine hydrochloride (CAS 107097-06-3)
- 3-Bromo-5,6,7,8-tetrahydrocyclopenta[4,5]pyrrolo[2,3-b]pyridine (CAS 581083-15-0)
- 4-Acetyl-4H-1,2,4-triazole-3-carboxamide (CAS 62735-13-1)
- 2-(1-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)piperidin-4-yl)acetohydrazide (CAS 537050-18-3)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
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