Testosterone Impurity 15 CAS 1311972-85-6
| CAS No. | 1311972-85-6 |
| Molecular Formula | C19H28O2 |
| Molecular Weight | 288.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Testosterone Impurity 15 (CAS 1311972-85-6), a pharmacopoeial impurity reference standard (molecular formula C19H28O2, MW 288.42 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Testosterone Impurity 15 (C19H28O2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 288.42 g/mol, it falls into the medium-molecular-weight range. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C19H28O2 |
| Molecular Weight | 288.42 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 | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
Related Testosterone Standards
- Testosterone Impurity 8 (Androstane-3,17-Dione) (Mixture of Diastereomers) (CAS 5982-99-0)
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- Testosterone Impurity 17 (CAS 14043-47-1)
- Testosterone Impurity 67 (CAS 330433-79-9)
- Testosterone (CAS 58-22-0)
- 1-Testosterone (CAS 65-06-5)
- Testosterone Impurity N11 (CAS 3275-64-7)
- Testosterone Impurity N35 (CAS 27833-18-7)
Recommended Standards
- Rocuronium Impurity 48 (CAS CATO-C4X-124248)
- Rocuronium Impurity 46 (CAS CATO-C4X-124246)
- Rocuronium Impurity 34 (CAS CATO-C4X-124234)
- Levonorgestrel EP Impurity K (CAS 793-55-5)
- Aristolochia lactam impurity 8 (CAS 112501-43-6)
- Naltrexone impurity 52 (CAS CATO-C4X-147552)
- Methyl Salicylate EP Impurity J (CAS 22717-57-3)
- Methyl 2-iodo-1H-pyrrolo[2,3-b]pyridine-5-carboxylate (CAS 1638760-57-2)
- 4-((Hexyloxy)methyl)benzenethiol (CAS 1443339-20-5)
- ethyl 2-aminoquinoline-4-carboxylate (CAS 5466-28-4)
- 5-(Phenoxymethyl)-1,3,4-oxadiazol-2-amine (CAS 21520-88-7)
- 2,2-Dimethylpiperazine-1,4-diol (CAS 118176-37-7)
- (S)-GDC-0834, >98% (HPLC) (CAS 1133432-50-4)
- Peptide 435 (CAS CATO-CPTD788435)
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