Testosterone Impurity 75 CAS CATO-C4X-243275
| CAS No. | CATO-C4X-243275 |
| Molecular Formula | C21H29NO5 |
| Molecular Weight | 375.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Testosterone Impurity 75 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.
CATO supplies Testosterone Impurity 75 (CAS CATO-C4X-243275), a pharmacopoeial impurity reference standard (molecular formula C21H29NO5, MW 375.46 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C21H29NO5, Testosterone Impurity 75 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 375.46 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C21H29NO5 |
| Molecular Weight | 375.46 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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 |
| Nitrogen Atoms | 1 |
Related Testosterone Standards
- Testosterone 17-Valerate (CAS 3129-43-9)
- Testosterone enol diacetate (CAS 1778-93-4)
- Testosterone Impurity 12 (CAS CATO-C4X-132612)
- Testosterone-17-sulfate (CAS 651-45-6)
- Testosterone Methanesulfonate (1.0mg/ml in Acetonitrile) (CAS 23067-29-0)
- Testosterone Impurity 52 (CAS CATO-C4X-243252)
- Testosterone Isocaproate EP Impurity E (CAS 10312-45-5)
- Testosterone isocaproate (CAS 15262-86-9)
Recommended Standards
- Alogliptin impurity 88 (CAS 1473368-47-6)
- Difelikefalin Impurity 1 (CAS 956242-62-9)
- Alogliptin Impurity 62 (CAS 607376-86-3)
- Cyphenothrin (CAS 39515-40-7)
- Idarubicin impurity 15 (CAS CATO-C4X-137415)
- Cefodizime Impurity 3 (CAS 111298-82-9)
- Dopamine Impurity 80 (CAS CATO-C4X-190880)
- Formoterol EP Impurity I (Enantiomer Mixture) (CAS 532414-36-1)
- Benzyl 4-bromo-2,2-dimethyl-3-oxobutanoate (CAS 210880-38-9)
- (E)-N'-Hydroxy-2-(4-hydroxyphenyl)acetimidamide (CAS 58484-76-7)
- Ethyl 4-methyl-2-(3-chlorophenyl)thiazole-5-carboxylate (CAS 1160573-81-8)
- 4-Butyl-5-hydroxy-2-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-3(2H)-one (CAS 975-18-8)
- 4-[(5-Chloro-2,3-dihydro-2,2-dimethyl-7-benzofuranyl)methoxy]-2,3-dimethylbenzenepropanoic Acid (CAS 1234844-11-1)
- Semaglutide impurity 46 (CAS CATO-C4X-222646)
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