Levonorgestrel EP Impurity T CAS 799-43-9
| CAS No. | 799-43-9 |
| Molecular Formula | C22H30O2 |
| Molecular Weight | 326.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Levonorgestrel EP Impurity T (C22H30O2) 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).
Levonorgestrel EP Impurity T (CAS 799-43-9) is a certified pharmaceutical impurity reference standard with the molecular formula C22H30O2 and a molecular weight of 326.47 g/mol.
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 | C22H30O2 |
| Molecular Weight | 326.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Levonorgestrel Standards
- Levonorgestrel EP Impurity S (CAS 176254-10-7)
- Levonorgestrel EP Impurity T (CAS 14507-51-8)
- Levonorgestrel EP Impurity J (CAS 1175109-63-3)
- Levonorgestrel Impurity 40 (10R) (CAS CATO-C4X-167740)
- Levonorgestrel Impurity 41 (CAS CATO-C4X-167741)
- Levonorgestrel EP Impurity G (CAS 87585-03-3)
- Levonorgestrel EP Impurity H (CAS 55555-97-0)
- Levonorgestrel EP Impurity I (CAS 21508-50-9)
Recommended Standards
- Promegestone (CAS 34184-77-5)
- 3-(Cyclooctylsulfamoyl)benzene-1-carbothioamide (CAS 1036619-17-6)
- Desogestrel Impurity 6 (CAS 70805-84-4)
- N1-[2-(2,6-dimethylphenoxy)propyl]-N4,N4-diethyl-1,4-benzenediamine (CAS 1040683-10-0)
- Midazolam EP Impurity E DiMaleate Salt (CAS 59469-29-3)
- Esmolol Impurity 69 (CAS CATO-C4X-189169)
- Suzetrigine Impurity 24 (CAS 3083330-03-1)
- Ethyl 2-[2-(phenylamino)-1,3-thiazol-4-yl]benzoate (CAS 339010-10-5)
- Methyl (1aS,6aS)-4-methylenehexahydrocyclopropa[b]pyrrolizine-5a(3H)-carboxylate (CAS 2856022-72-3)
- tert-Butyl 3-benzyl-3,6-diazabicyclo[3.1.1]heptane-6-carboxylate (CAS 869494-15-5)
- 5-Chloro-1-((2-hydroxyethoxy)methyl)pyrimidine-2,4(1H,3H)-dione (CAS 81777-50-6)
- (4-Chloro-3-nitrophenyl)(pyrrolidin-1-yl)methanone (CAS 288154-78-9)
- Pomalidomide Impurity 3 (CAS 2635-64-5)
- Tirzepatide Impurity 25 X TFA Salt (CAS CATO-C4X-324025)
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